Prof. Ikeoluwapo O. AJAYI



Name: AJAYI IkeOluwapo O. Ajayi
Designation: Professor
 Faculty: Public Health
 Department: Epidemiology and Medical Statistics
Phone Number: +234 8023268431

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1 Selected Research Grants/awards (Current Research)

Title: Integrating Palliative Care during COVID-19 era for patients with chronic diseases using remote delivery at selected secondary health facilities in Ibadan, Nigeria

Funding: True Colour Grant

Year: 2021-2023

Role: Principal Investigator/Mentor

Details: The study aims to integrate palliative care within the clinical management and care of patients with chronic diseases at the secondary health centres in Nigeria in order to facilitate access to comprehensive support and care for their palliative care needs. The specific objectives include to i. understand stakeholder perspective and requirements to guide the integration of remote palliative care within clinical management of patients with life limiting illness at secondary health care level ii. train 20 healthcare professionals on basic palliative care to identify patients with palliative care needs and referring patients for remote specialist palliative care consultation within 2 months iii. conduct remote specialist palliative care consultation to meet the complex multidimensional palliative care needs of patients with life limiting issues iv. assess the experience of the integrated palliative care services by the healthcare professionals, patients and families of patients at this secondary centres. At the end of the study, it is expected that patients with life-limiting illness receiving treatment at secondary health facilities will have access to comprehensive support to meet their multidimensional palliative care needs through remote consultations and have improved quality of life.

Title: Pilot process evaluation of the University College Hospital (UCH), Ibadan, Cell Phone Palliative Care Symptom Application (“APP”)

Funding: Center for Palliative Care, UCH

Year: 2021

Principal Investigators: Dr. Adeniyi Olabumuyi

Role: Co-investigator

Details: The goal of this research are to demonstrate operational feasibility, acceptance, and repeated use of a newly developed cell phone “app” with which patients report symptoms and their intensities by multiple health care providers and patients/family members.  The developmental work has been completed. The investigators have created a 16-item common symptom questionnaire and installed this on an Android phone platform, with both English and Yoruba language versions. This will be evaluated for reliability and validity.

Title: Development of a package to improve hypertension control in Nigeria.

Funding: Tertiary Education Trust Fund (TETFund), Nigeria


Year: 2019-2023

Role: Principal Investigator 

Details: This is a multi-state and multidisciplinary implementation/operational research across three geopolitical zones in Nigeria – South west, South East and North West. The aim of the study is to develop an innovative package to improve hypertension control in Nigeria, evaluate the effectiveness and assess the effectiveness of community based oriented persons (CORPs) in the delivery of the package at the community level. This research is expected to change behaviours at multiple levels and build specific capacity and supports for hypertension care. We expect an increase in awareness, knowledge of hypertension, screening and health lifestyle practices, as well as adherence to hypertension treatment. Three MSc students project were carved out of the project and they have graduated. Two junior lectures are currently being mentored on this project.

Title: Masters’ Programme in Epidemiology and Biostatistics with Specialization in Disease Outbreak and Epidemic Response in sub-Saharan Africa

Funding agency: EDCTP/CDC Africa

Year: 2021 -2024

Role: Co-Coordinator

Details: The objective of this capacity building programme is to train a cohort of epidemiologists and biostatisticians across sub-Saharan Africa, who can collectively conduct routine surveillance, conduct public health research and respond timely to disease outbreaks. These EPI Fellows (early to mid-career researchers) will enhance the public health workforce capacity in National Public Health Institutes (NPHISs) and National Ministries of Health to enable them to respond to outbreaks promptly in their respective countries.

Title: Eastern Nigeria Research Ethics Training (ENRICH) Program

Funding agency: NIH/FIC R25 TW011811

Year: 2021 -2026

Role: Co-Investigator

Details: This is a new bioethics training program for eastern Nigeria. The training grant is providing research ethics training and promoting contributions of Nigerian bioethicists in global bioethics discourse.

Title: Field Assessment of the burden and determinants of malaria transmission to inform tailoring of interventions (microstratification) in Ibadan and Kano metropolis, Nigeria

Year: 2022-2024

Funding agency: Bill and Melinda Gates / Northwestern University, Chicago, USA

Role: Co- Principal Investigator

Details: In collaboration with the Nigeria Malaria Elimination Programme (NMEP) and Northwestern University, Chicago, USA, we aim to inform intervention targeting for urban areas in the 2026 – 2030 National Malaria Strategic Plans by conducting human and entomological studies to understand malaria risk and its drivers in Kano and Ibadan metro areas. Our human studies will involve qualitative, cross-sectional and longitudinal approaches while entomological studies will be strictly longitudinal. The overarching aims of the study are to evaluate the i. Ward-level prevalence of malaria ii. Malaria seasonality iii. Risk factors for malaria prevalence and incidence iv. Larval habitats, indoor and outdoor transmission rates, species composition and dynamics, biting rates and inoculation rates of Anopheles vectors

Completed Research

Title: Needs assessment and mentoring for the establishment of a palliative care unit at the Lagos University Teaching Hospital, Lagos

Year: 2022

Role: Investigator/Advisor

Details: This needs assessment was carried by the Center for Palliative Care Nigeria to explore the readiness of the Lagos University Teaching Hospital, Lagos to commence provision of palliative care services through a dedicated palliative care unit. Qualitative methods using focus group discussion and key informant interviews were used to assess the knowledge, perceptions, possible models of delivery, and barriers/ opportunities for palliative care provision among potential clients and key members of staff. Questionnaires were administered to health professionals who had been trained previously, assessing their readiness and perceptions on starting a palliative care unit in their institution. The study showed that the potential clients had very poor knowledge of palliative care services; the institution- LUTH is partly ready to commence service provision, even though the hospital management has expressed a readiness to provide institutional support.

Title: Adoption of National Home-Grown School Feeding (NHGSF) Programme to promote safe dietary sodium (salt) intake and reduce risk of cardiovascular disease among school age children in South West Nigeria

Funding: LINKS Resolve to Save Lives, USA / WHO/CDC    

Year: 2019-2022

Role: Principal Investigator 

Details: This was a highly competitive, two-year grant to address the burden of excess salt intake among schoolchildren in Nigeria.  The interventions included training of food vendors on salt use in food preparation, health education on reduced dietary salt consumption to the pupils, teachers, parents and stakeholders in NHGSF programme. The study was conducted in primary schools in Ogun and Oyo States in southwestern Nigeria.

Title: Factors influencing uptake and delivery of Preventive chemotherapy for helminthic Neglected Tropical Diseases among selected hard-to-reach communities in South-Eastern, Nigeria.

Funding: African Research Network for Neglected Tropical Diseases (ARNTD) Small Grant Programs (ARNTD) - SGPII/0114/089

Year: 2019

Role:  Mentor /Advisor

Details: One of my mentees while undergoing her PhD was encouraged to apply for this small grant and succeeded. It is a formative study to quantify and describe implementation challenges of preventive chemotherapy (PC) for helminths in hard-to-reach areas as well as make recommendations for program improvements. The study was successfully carried out. This is one of my major contributions to building capacity for and promoting implementation research among early/mid-career researchers. 

Title: Evaluation of an intervention to improve health care delivery services and health system’s response to cholera outbreaks among migrants (nomads, labor migrants) in Oyo State, Nigeria.

Funding: WHO AFRO/TDR Small grant scheme for implementation research in infectious diseases of poverty

Year: 2018-2019

Role:  Co-Investigator / Mentor 

Details: The specific objectives of this implementation research were to identify challenges in the health system with regards to provision of service to migrants and response to cholera outbreak; Improve Capacity of Oyo State health workers on Cholera Outbreak Detection and Response Preparedness and Evaluate the effect of an intervention to improve the health system capacity to respond to migrants’ health needs and cholera outbreak. This was a collaborative project between Epidemiology and Biostatistics Research Unit (EBRU), IAMRAT, College of Medicine, University of Ibadan and Oyo state Ministry of Health, Nigeria. It was successfully implemented and three mentees and the state epidemiologist were trained on the study. At least 3 publications in peer reviewed journals emanated from the study.

Title: The Effect of the Support of National Malaria Programme (SuNMap) Capacity Building Programme on Case Management of Malaria

Funding: SuNMAP

Year: 2015-2017

Role:  Principal Investigator 

Details: This study assessed the effectiveness of the SuNMaP case management capacity building programme on the quality of case management of malaria fever among children under 5 years of age attending public and private sector health facilities in Niger State. The SuNMap had Instituted a training intervention to health workers in health facilities in the state prior to this study. Two publications emanated from this study.

Title: Training program in Nigeria for Non-communicable diseases (NCD) Research (Traping-NCD)

Funding: NIH/Fogarty International Center

Year: 2011- 2017

Role:  Co-Principal Investigator 

Details: This grant trains in Epidemiology and biostatistics to rapidly build capacity in NCD research. Postgraduate students and Faculty members were trained to build capacity for NCD research. Four Lecturers from two Universities were sponsored to Harvard T. Chan School of Public Health, Boston, USA to study Case-based Teaching methods and at least 4 postgraduate students were sponsored to training workshops on NCD and Nutrition Epidemiology. The fund supported manuscript and grant writing workshops for postgraduate students among other capacity building activities.

Title: Feasibility, acceptability and costs of a community-based diagnostic and treatment package for malaria of varying degrees of severity in sub-Saharan Africa.

Funding: WHO ID No A80550

Year: 2013-2016

Role:  Principal Investigator 

Details: This multi-country implementation research was carried out in Burkina Faso, Nigeria and Uganda to further provide evidence for the adoption of home management of malaria in sub-Saharan Africa and show that all the components of malaria treatment can be administered at the community level having demonstrated the feasibility using artemisinin combination therapy (ACT) in earlier studies. The findings consolidated existing evidence that CHWs should be included in primary healthcare provision, especially in resource-poor settings. Five MSc students in the University of Ibadan were sponsored at various level on this project and the data was shared with a MSc Student of the Harvard T.H Chan School of Public Health who analysed the data to examine fidelity of the implementation of the study for her MSc project. This study produced at least 12 important research publications, 9 of which make up publications in a supplement issue of the Clinical Infectious Diseases Journal 2016; 63(S5) and transcends all the components of Implementation research and is the first in Nigeria and one of the few in Africa. The outcome of the study provided evidence-based recommendations which, the governments of the participating countries have used to improve the treatment of malaria.

Title: Consequences of restricting anti-malarial drugs to rapid diagnostic test positive fever cases and causes of non-malarial febrile illness

Funding: SuNMap

Year: 2013

Role:  Principal Investigator  

Details: This study explored the risk of developing clinical malaria and anaemia within 28 days post treatment among febrile children who had a mRDT negative result and were not given ACT compared to those who had a mRDT positive result and were given ACT. At least 2 publications emanated from the study.

Title: Improving Health Care Delivery in Urban Communities in Africa using the Community-Directed Intervention Approach

Funding: WHO/ TDR (Project No. A90075)

Year: 2010 - 2012

Role: Principal Investigator

Details: This multi-country implementation research was carried out in Democratic Republic of Congo, Ghana, Liberia and Nigeria.  It explored the feasibility of deploying community directed intervention approach to delivery of health care in poorly served urban communities. The findings in this study support the feasibility of using the CDI process as currently used in rural communities for delivery of health interventions in poorly served urban communities with modifications based on significant differences between rural and urban characteristics. However, mechanism for motivating and sustaining CHWs/volunteers needs to be developed. The adoption of Community oriented resource persons/community medicine distribution for community-based healthcare provision was suggested and this contributed to available evidence that informed the policy for task shifting in health care in the sub-region. 

Title: Feasibility and acceptability of artemisinin-based combination therapy for the home management of malaria in four African sites

Funding: WHO ID No A41054

Year: 2005-2006

Role: Principal Investigator 

Details: This was a multi-country implementation research with the goal of Improving home management of malaria using Artemether-lumefantrine in four African Sites countries (Nigeria, Uganda, & two sites in Ghana) with populations ranging between 38,000 and 60,000. The feasibility and acceptability of incorporating ACT in HMM using trained community drug distributors was evaluated. This study gave the first clear evidence that ACT can be used effectively and safely for home management of malaria by trained lay caregivers – thus, drawing the attention of the National Malaria Control Division of the Federal Ministry of Health to a need for the review of the national treatment guideline. This was pivotal in the plan by the FMoH to scale up the use of ACT for HMM in the four different sites in sub-Saharan Africa.

Title: Effectiveness of Artemether-Lumefantrine in Unsupervised Home Treatment of Uncomplicated Malaria: Nested in Project ID A41054

Funding: WHO ID No A41054

Year: 2005-2006

Role: Principal Investigator 

Details: This study was conducted to establish the effectiveness of ACT when used in HMM context; a corollary study Nested into Project ID A41054. The study found the parasitological rate was above the threshold of 90% below which WHO recommends changing antimalarial drug policy (WHO, 2001). CMDs successfully learned to prepare blood films for microscopical examination. This added to the evidence base for HMM as a public health strategy as well as for scaling-up implementation of HMM with ACTs globally.

Title: Introducing Patient Centered Clinical Method (PCCM) to the teaching and practice of Family Medicine in Nigeria.

Funding: LANDMARK Group of Companies (Private Organisation)

Year: 2005-2006

Role:  Principal Investigator / Mentor 

Details: The PCCM method looked into the biopsychosocial aspect of clinical medicine. The grant was used to develop a training curriculum for residents and Fellows in Family medicine and train trainers who cascaded the training in their respective institutions. This informed the Faculty of Family Medicine, West African College of Physicians and National Postgraduate Medical College, Nigeria to include PCCM in the residents training curriculum and I pioneered the training.

Title: Incorporating Socio-cultural and Economic Characteristics of Mothers and Caregivers in the Home Management of Malaria (HMM) in Children

Funding agency: WHO/MIM/TDR (ID 980048)

Year: 1998-2002

Role: Co-Investigator

Details: In this pioneer implementation research project, we looked at Incorporating Socio-cultural and Economic Characteristics of Mothers and Caregivers in the Home Management of Malaria (HMM) in Children. The findings of this study which involved over 2000 citizens in the selected LGAs in Oyo State (Ogbomosho (North and South), Orire, Kajola, and Iseyin Local Government Areas) in Nigeria, provided evidence-based information on gaps in community-based management of malaria which include grossly under-equipped healthcare facilities, the key decision makers on health issues in the homes, key players in HMM strategy and what needed to be considered in promoting HMM in Nigeria which guided advocating for and the delivery of a novel intervention – HMM. Two MSc students, 1 Ph.D. student and junior researchers from various disciplines were trained on this project.

Title: Inter-institution collaboration and studies on combination therapy: drug resistance, immunology and vaccine for malaria.

Funding: WHO/TDR/RCS (ID No. 970678)

Year: 1997 -2001

Role: Trainee

Details: The goal of this study was to improve clinical management of drug resistant malaria following reports of malaria parasite developing resistance to chloroquine. We investigated the clinical validation of Chlorpheniramine (Piriton™), a drug without antimalarial properties, to modulate/ enhance antimalarial property of chloroquine in vitro in a controlled community based clinical study. Enhanced efficacy of chloroquine-chlorpheniramine combination in treating acute uncomplicated P. falciparum infection in children was clearly demonstrated.  This provided evidence for drug development to combine chlorpheniramine with chloroquine compound to be more efficacious.  The study also involved a collaborative network between the Malaria Research Group, the Oyo State Ministry of Health, the Oyo State Hospitals Management Board and the Development Policy Centre with the aim of providing opportunity to disseminate research findings, informing policy and translating research findings to policy and action. Many Postgraduate students were also trained on the project. 


(i) Books and/or articles in books:

Chapters in book

  1. Ajayi I.O and Bamgboye EA. Epidemiology of Trauma: In Manual of Emergency and Essential Surgical Care in Sub-Saharan Africa. Ed. E.O Olapade-Olaopa, Jk Ladipo, A. Oladokun and S.D Amanor Boadu. 2017; Pg 161-172. A WHO supported Publication.
  2. Isere E. E, Adedire E. B, Ajayi I.O.  (2019). Surveillance Data: Generating Credible Statistics for Policy Making. In Adebowale, A.S. & Akinyemi, J.O. (Eds.), Selected Topics in Medical Statistics. ANDKOLAD Nig. LTD, Ile-Ife. First Edition. Chapter 22. pp. 508-530. ISBN 978-978-546-339-6.
  3. WHO & IAEA. Guidance framework for testing the sterile insect technique as a vector control tool against Aedes-borne diseases. Geneva: World Health Organization and the International Atomic Energy Agency; 2020. Licence: CC BY-NC SA 3.0 IGO. Contributors: IkeOluwapo Ajayi, Romeo Bellini, Pascal Boireau, Steven Bradbury, Salome A. Bukachi, Lee Ching Ng, Fang Jing, Pattamaporn Kittayapong, Pablo Liedo, Kenneth Linthicum, John Mumford, Manju Rahi, Matthew Thomas, Yesim Tozan, Alia Zayed.
  4. Ajayi I.O, Salawu M.M (2022). Basics of Monitoring and Evaluation and Application in Palliative Care. In Essentials of Palliative Care: A handbook for Health Professionals and Students. Ed. Soyannwo O. A, Ogunniyi O. Ajayi I.O. 2022; College Press. First Edition. Chapter 29; Pg 304-328. ISBN 978-978-59159-5-2
  5. Ajayi I.O, Salawu M.M, Odebunmi K. (2022) Research in Palliative Care. In Essentials of Palliative Care: A handbook for Health Professionals and Students. Ed. Soyannwo O. A, Ogunniyi O. Ajayi I.O. 2022; College Press. First Edition. Chapter 29; Pg 304-328. ISBN 978-978-59159-5-2

(ii) Published papers in learned journals: [presented by themes">Effectiveness, Compliance and Convenience of Multiple Dose Regimen of Chloroquine Plus Chlorpheniramine Combination in the Treatment of Falciparum Malaria in A Rural Community in Nigeria. American Journal of Tropical Medicine and Hygiene, 62 (3 Supp):447.6

  1. Ajayi I.O., Falade C.O., Adeniyi J.D., Bolaji M.O. (2003). The role of Patent Medicine Sellers in Home Management of Childhood Malaria: A Situational Analysis of Experience in Rural Nigeria. International Quarterly of Community Health Education, 21 (3): 271- 281.
  2. Falade C.O., Ogundiran M.O., Bolaji M.O., Ajayi I.O., Akinboye D.O., Oladepo O., Adeniyi J.D., Oduola A.M.J. (2005). The Influence of Cultural Perception of Causation, Complications and Severity of Childhood Malaria as Determinants of Treatment and Preventive Pathways. International Quarterly of Community Health Education, 24 (4): 345-361.
  3. Falade C.O., Oladoyinbo S.O., Elemile T.T., Ajay, I.O., Fawole O.I., Oladepo O., Adeniyi J.D., Oduola A.M.J. (2006). How Well Equipped Are Healthcare Facilities to Manage Childhood Malaria: The Situation in Selected Local Government Areas in South Western Nigeria African Journal of Medicine and Medical Sciences, Vol. 35: 329-335.
  4. Ajayi I.O. and Falade C.O. (2006). Pre-Hospital Treatment of Febrile Illness In Children Attending the General Outpatients Clinic, University College Hospital, Ibadan, Nigeria. African Journal of Medicine and Medical Sciences, Vol. 35: 85-91.
  5. Ajayi I.O., Kale O.O., Oladepo O., Bamgboye E.A. (2006). Using “mother trainers” for malaria control: the Nigerian experience. International Quarterly of Community Health Education, 27 (4): 351-369.
  6. Falade C.O., Ogundahunsi O.A.T., Ajayi I.O., Oduola A.M.J. (2008). Effectiveness of the use of chloroquine plus chlorpheniramine combination in the management of acute uncomplicated malaria. Nigerian Medical Journal, 49 (2): 34-38.
  7. Ajayi I.O., Browne E.N., Garshong B., Bateganya F., Yusuf B., Agyei-Baffour P., Doamekpor L., Balyeku A., Munguti K., Cousens S., Pagnoni F. (2008). Feasibility and acceptability of artemisinin-based combination therapy for the home management of malaria in four African sites BioMed Central Malaria Journal, 7 (6): doi:10.1186/1475-2875-7-6
  8. Ajayi I.O., Falade C.O., Bamgboye E.A., Oduola A.M.J., Kale, O.O. (2008). Assessment of a treatment guideline to improve home management of malaria in children in rural south west Nigeria. BioMed Central Malaria Journal, 7 (24): doi:10.1186/1475-2875-7-24
  9. Ajayi I.O., Falade C.O., Olley B.O., Yusuf B., Gbotosho S., Iyiola T., Olaniyan O., Happi C., Munguti K., Pagnoni F. (2008). A qualitative study of the feasibility and community perception on the effectiveness of artemether- lumefantrine use in the context of home management of malaria in south-west Nigeria. BioMed Central Health Services Research, 8: 119 doi:10.1186/1472-6963-8-119.
  10. Ajayi I.O., Browne E.N., Bateganya F., Yar D., Happi C., Falade C.O., Gbotosho G.O., Yusuf B., Boateng S., Mugittu K., Cousens S., Nanyunja M., Pagnoni F. (2008). Effectiveness of artemisinin-based combination therapy used in the context of home management of malaria: A report from three study sites in sub-Saharan Africa. BioMed Central Malaria Journal 7: 190.
  11. Yusuf O.B., Dada-Adegbola H.O., Ajayi I.O., Falade C.O. (2008). Malaria prevention practices among mothers delivering in an urban hospital in southwest, Nigeria. Journal of Vector Borne Diseases, 45 (3): 217-224.
  12. Yusuf O.B., Falade C.O., Ajayi I.O., Gbotosho G.O., Happi T.C., Pagnoni F. (2009). Community Effectiveness of ACT for malaria in rural southwestern Nigeria. International Quarterly of Community Health Education, 29: 45-56.
  13. Ajayi I.O., Oladepo O., Falade C.O., Bamgboye E.A., Kale O. (2009). The Development of a treatment guideline for childhood malaria in rural Southwest Nigeria using participatory approach. Patient Education and Counseling, 75(2): 227-237.
  14. Akinleye S.O., Falade C.O., Ajayi I.O. (2009). Knowledge and utilization of intermittent preventive treatment for malaria among pregnant women attending antenatal clinics in primary healthcare centers in rural southwest, Nigeria: a cross-sectional study. BioMed Central Pregnancy and Childbirth, 9: 28.
  15. Ajayi I.O., Falade C.O., Kale O.O. (2009). An assessment of accuracy of mother’s presumptive diagnosis of fever at home in southwest Nigeria. East African Journal of Public Health, 6s (3): 229-234.
  16. Akerele A., Yusuf O.B., Falade C.O., Ajayi I.O., Pagnoni F. (2011). Factors Associated with Use of Guideline in Home Management of Malaria among Children in Rural Southwest Nigeria. Malaria Research and Treatment, Vol. 2011: Article ID 701320, 6 pages doi:10.4061/2011/701320
  17. Akinleye S.A., and Ajayi I.O. (2011). Knowledge of malaria and preventive measures among pregnant women attending antenatal clinic in a rural Local Government Area in southwest Nigeria. Journal of World Health & Population. 12 (3): 13-22.
  18. Ajayi, I.O. Jegede A.S., Falade C.O. (2012). Sustainability of Intervention for Home Management of Malaria: The Nigerian Experience. Journal of Community Medicine and Health Education, 2: 175. doi:10.4172/2161-0711.1000175
  19. Falade C.O., Adesina-Adewole B., Dada-Adegbola H.O., Ajayi I.O., Akinyemi J.O., Ademowo O.G, Adewole I.F., Kanki, P. (2013). Evaluation of Paracheck-Pf: Rapid Malaria Diagnostic Test for the Diagnosis of malaria at point of care among HIV-positive patients in Ibadan, south western Nigeria. Pathogens and Global Health, 107 (2): 69-77.
  20. Olorunda, D.C., Ajayi, I.O., Falade, C.O. (2013). Do Frequent Antenatal Care Visits Ensure Access and Adherence to Intermittent Preventive Treatment of Malaria in Pregnancy in an Urban Hospital in South West Nigeria? African Journal of Biomedical Research, 16 (3): 153-161.
  21. Ajayi I.O., Soyannwo T., Akpa O.M. (2013). Awareness and utilization of Affordable Medicine Facility-malaria among caregivers of under-five children in Ibadan, North-west Local Government Area, Oyo State. Malaria Research and Treatment, 2013: article ID 176096
  22. Falade C.O, Ajayi I.O., Yusuf O.B., Pagnoni F. (2014). High acceptance of artemisinin-based combination therapy for the home management of malaria in rural communities in southwest Nigeria. Malaria World Journal 5:5.
  23. Ojo O.O., Ajayi I.O., Awolola T.S. (2014). Geographical/Ecological Differentials in Insecticide Treated Net Use among Under-Five Children in Somolu Local Government Area, Lagos State. World Health & Population, 15 (4).
  24. Adebisi A.K., Oloruntoba E.O., Ana G.R.E.E, Ibrahim T.K., Akinyemi J.O., Ajayi I.O., Falusi A.G., Bamgboye E.A. (2014). Knowledge, Perception and Control Practices of Malaria Vector among Caregivers of Under-five Children in Selected Rural Communities in Ibadan, Nigeria. African Journal of Sustainable Development, 4 (2): 63-77
  25. Olugbade O.T., Ladipo T.O., Ajumobi O., Adedokun B., Olayinka A., Ajayi I. (2014) Malaria control interventions: Outcomes in attendees of health facilities in Oyo State, Nigeria 2012. International Journal of Infectious Diseases, 21: 399-400
  26. Abdulkadir B.I, Ajayi I.O. (2015) Willingness to accept malaria vaccine among caregivers of under-5 children in Ibadan North Local Government Area, Nigeria. Malaria World Journal 6:2
  27. Ajayi I.O, Afonne, Dada-Adegbola H., Falade C.O. (2015) Prevalence of Asymptomatic Malaria and Intestinal Helminthiasis Co-infection among Children Living in Selected Rural Communities in Ibadan Nigeria. American Journal of Epidemiology and Infectious Disease, 3 (1): 15-20. doi: 10.12691/ajeid-3-1-3
  28. Bello O., Lamidi-Sarumoh A.A., Yusuf B., Akinyemi J.O., Ajayi I.O., Falade C.O. (2015). Attributable Fraction Estimates for Malaria in Pregnant Women in Southwest Nigeria. Journal of Women’s Health, Issues & Care, 4 (1).
  29. Jegede S.A., Ajayi I.O., Oshiname F.O., Falade C.O., Chandramohan D., Prudence H., Webster J., Baba E. (2015). Qualitative assessment of rural health workers’ management of malaria in sick children. Malaria World Journal, 6:7
  30. Nwokocha L., Ajayi I. (2015). Socioeconomic Differentials in Childhood Malaria Prevalence among Children of Civil Servants and Market Women in Ibadan North Local Government Area. Demographic Issues in Nigeria: Insights and Implications, 2015: 1981
  31. Awere O.Y., Ajayi I. (2015). Household and community level factors associated with use of mosquito nets for under-five children in Nigeria: a multilevel analysis. Tropical Medicine & International Health, 20:94-94 · 
  32. Onwuka J.U., Akinyemi J.O., Ajayi I.O. (2015). Household ownership and use of insecticide-treated bednets among school children in Ibadan, Oyo State, Nigeria. Malaria World Journal, 7(9):611
  33. Afonne C., Ajayi I.O., Falade C.O. (2015.) Occurrence of asymptomatic malaria and malaria prevention practices in selected rural communities in Ibadan, Nigeria. Tropical Medicine & International Health, 20:178
  34. Adedire E.B, Asekun-Olarinmoye E.A, Ajumobi O, Fawole O, Nguku P, Ajayi I. (2016). Determinants of Home-Care Practices for Childhood Febrile Illnesses in Rural Communities, Osun State, Nigeria. IOSR Journal of Dental and Medical Sciences (IOSR-JDMS), 15(2): 60-66.
  35. Owolabi B. B., Yusuf O. B., Afonne C, Afolabi N. B., Ajayi I. O. (2016). Parametric and Non-Parametric Estimates of Malaria Attributable Fractions among Children in South West Nigeria. American Journal of Mathematics and Statistics, 6(2): 79-85.
  36. Muhammad H. U., Giwa F.J., Olayinka A. T., Balogun M., Ajayi I. O., Ajumobi O, Nguku P. (2016) Malaria prevention practices and delivery outcome: a cross sectional study of pregnant women attending a tertiary hospital in northeastern Nigeria. BioMed Central Malaria Journal, 15:326 90.
  37. Bamiselu O. F., Ajayi O., Fawole F., Dairo D., Ajumobi O., Oladimeji A., Steven Y. (2016). Adherence to malaria diagnosis and treatment guidelines among healthcare workers in Ogun State, Nigeria. BioMed Central Public Health, 16:828.
  38. Ogunniyi A., Dairo M. D., Dada-Adegbola H., Ajayi I. O., Olayinka A., Wellington A. O., Fawole, O. and Ajumobi. O. (2016) Cost Effectiveness and Validity Assessment of Cyscope Microscope, Quantitative Buffy Coat Microscope, and Rapid Diagnostic Kit for Malaria Diagnosis among Clinic Attendees in Ibadan, Nigeria. Malar Res Treat., 2016;2016:5242498. doi: 10.1155/2016/5242498. 
  39. Yusuf O. B., Akinyemi J. O., Fagbamigbe A. F., Ajayi I. O., Bamgboye E. A., Ngige E., Issa K., Abatta E., Ezire O., Amida P., Bashorun A. (2016). Controlling Malaria in Pregnancy: How far from the Abuja targets?' Malaria World Journal, 7:7.
  40. Ajayi I.O., Nsungwa-Sabiiti J., Siribié M., Falade C.O., Sermé L., Balyeku A., Afonne C., et al. (2016) Feasibility of Malaria Diagnosis and Management in Burkina Faso, Nigeria, and Uganda: A Community-Based Observational Study. Clinical Infectious Diseases, 63(S5): S245–55.
  41. Castellani j., Nsungwa-Sabiiti J., Mihaylova B., Ajayi I.O., Siribié M., Afonne C., et al. (2016) Impact of Improving Community-Based Access to Malaria Diagnosis and Treatment on Household Costs. Clinical Infectious Diseases, 63(S5): S256-63.
  42. Siribié M., Ajayi I.O., Nsungwa-Sabiiti J., Afonne C., Balyeku A., Falade C.O., Gansane Z., et al. (2016) Training Community Health Workers to Manage Uncomplicated and Severe Malaria: Experience From 3 Rural Malaria-Endemic Areas in Sub-Saharan Africa. Clinical Infectious Diseases, 63(S5): S264-69.
  43. Sanou A.K., Jegede A.S., Nsungwa-Sabiiti J., Siribié M., Ajayi I.O, Turinde A, et al. (2016) Motivation of Community Health Workers in Diagnosing, Treating, and Referring Sick Young Children in a Multicountry Study. Clinical Infectious Diseases, 63(S5): S270 – 75.
  44. Singlovic J., Ajayi I.O., Nsungwa-Sabiiti J., Siribié M., Sanou A.K., Jegede A.S., et al. (2016) Compliance with Malaria Rapid Diagnostic Testing by Community Health Workers in 3 Malaria-Endemic Countries of Sub-Saharan Africa: An Observational Study. Clinical Infectious Diseases, 63(S5): S276 -82.
  45. Siribié M., Ajayi I.O., Nsungwa-Sabiiti J., Sanou A.K., Jegede A.S., Afonne C., et al. (2016) Compliance with Referral Advice After Treatment with Prereferral Rectal Artesunate: A Study in 3 Sub-Saharan African Countries. Clinical Infectious Diseases, 63(S5): S283 -89.
  46. Falade C.O., Ajayi I.O., Nsungwa-Sabiiti J., Siribié M., Diarra A., Sermé L., Afonne C, et al. (2016) Malaria Rapid Diagnostic Tests and Malaria Microscopy for Guiding Malaria Treatment of Uncomplicated Fevers in Nigeria and Prereferral Cases in 3 African Countries. Clinical Infectious Diseases, 63(S5): S290- 97.
  47. Castellani J., Mihaylova B., Ajayi I.O., Siribié M., Nsungwa-Sabiiti J., Afonne C., et al. (2016) Quantifying and Valuing Community Health Worker Time in Improving Access to Malaria Diagnosis and Treatment. Clinical Infectious Diseases, 63(S5): S298- 305.
  48. Jegede A.S., Oshiname F.O., Sanou A.K., Nsungwa-Sabiiti J., Ajayi I.O., Siribié M., et al. (2016) Assessing Acceptability of a Diagnostic and Malaria Treatment Package Delivered by Community Health Workers in Malaria-Endemic Settings of Burkina Faso, Nigeria, and Uganda. Clinical Infectious Diseases, 63(S5): S306- 11.
  49. Emiasegen S.E., Giwa F.J., Ajumobi O., Ajayi I.O., Ahmed S.A., Olayinka A.T. (2017) Asymptomatic Plasmodium falciparum parasitaemia among pregnant women: a health facility-based survey in Nassarawa-Eggon, Nigeria. Malaria World Journal, 8:7
  50. Ajumobi O.O., Sabitu K., Ajayi I.O., Nguku P., Ufere J., Wasswa P., Isiguzo C., Anyanti J., Liu J. (2017) Demand-related factors influencing caregivers' awareness of malaria tests and health workers' testing practices, in Makarfi, Nigeria. Malar J, 16:487
  51. Idokoko A.B., Ajayi I., Falade C.O., Soyannwo O. (2017) Pain in malaria: An assessment of its prevalence, characteristics and determinants in Ibadan, Nigeria. African Journal of Biomedical Research, 20(2):111-119.
  52. Oladoja O.A., Adedokun B.O., Ajayi I.O. (2017) Determinants of intermittent preventive treatment use among pregnant women attending antenatal care at three levels of care in Oyo state: a comparative cross-sectional study. Tropical Medicine & International Health, Vol 22:329-329.
  53. Adebisi N.A, Dada-Adegbola H.O, Dairo M.D, Ajayi I.O, Ajumobi O.O. (2018) Performance of malaria rapid diagnostic test in febrile under-five children at Oni Memorial Children’s Hospital in Ibadan, Nigeria, 2016. Pan African Medical Journal, 30:242. doi:10.11604/pamj.2018.30.242.13268
  54. Onyiah A.P, Ajayi I.O, Dada-Adegbola H.O, Adedokun B.O, Balogun M.S, Nguku P.M, et al. (2018) Long-lasting insecticidal net use and asymptomatic malaria parasitaemia among household members of laboratory-confirmed malaria patients attending selected health facilities in Abuja, Nigeria, 2016: A cross-sectional survey. PLoS ONE 13(9): e0203686. 10.1371/journal.pone.0203686
  55. Usman, Umar A.A., Gidado S.,  Gobir A.A.,  Obi I.F., Ajayi I.Ajumobi O. (2018). Predictors of malaria Rapid Diagnostic Tests’ utilisation among healthcare workers in Zamfara State. PLoS One.; 13(12): e0200856.
  56. IsraelK.,  Fawole O.I.,  Adebowale A.S., Ajayi I.O., Yusuf O.B., Oladimeji A., Olufemi Ajumobi O. (2018) Caregivers’ knowledge and utilization of long-lasting insecticidal nets among under-five children in Osun State, Southwest, Nigeria. Malar J. 17: 231.
  57. AkinyodeO., Ajayi I.O., Ibrahim M.S., Akinyemi J.O., Ajumobi O.O. (2018) Practice of antimalarial prescription to patients with negative rapid test results and associated factors among health workers in Oyo State, Nigeria. Pan Afr Med J., 30: 229.
  58. WelleC., Ajumobi O., Dairo M., Balogun M., Adewuyi P., Adedokun B., Nguku P., Gidado S., Ajayi I. (2019) Preference for Artemisinin–based combination therapy among healthcare providers, Lokoja, North-Central Nigeria. Global Health Research and Policy 4:1
  59. Olugbade O.T., Ilesanmi O.S., Gubio A.B., Ajayi I., Nguku P.M., Ajumobi O. (2019) Socio-demographic and regional disparities in utilization of intermittent preventive treatment for malaria in pregnancy - Nigeria demographic health survey 2013. Pan African Medical Journal. 2019, 32 Supp (1:13).
  60. Adewole A., Fawole O., Ajayi I., Yusuf B., Oladimeji A., Waziri E., Nguku P., Ajumobi O. (2019) Determinants of Intermittent Preventive Treatment of Malaria among Women Attending Antenatal Clinics in Primary Health Care Centers in Ogbomoso, Oyo State. Pan Afr Med J., 11;33:101. doi: 10.11604/pamj.
  61. Dimas H., Sambo N., Ibrahim M., Ajayi I., Nguku P., Ajumobi O. (2019) Coverage of Indoor Residual Spraying for Malaria control and factors associated with its acceptability in Nasarawa State, North-Central Nigeria. Pan African Medical Journal, 33:84. doi:10.11604/pamj.2019.33.84.13212
  62. Falade C.O., Orimadegun A.E., Obaro Stanley Michael O.S., Dada-Adegbola H.O., Ogunkunle O.O., Badejo J.A., Funwei R.I., Ajayi I.O., Jegede A.S., Ojurongbe O.D., Ssekitooleko J., Baba E., Hamade P., Webster J., Chandramohan D. (2019) Consequences of restricting antimalarial drugs to rapid diagnostic test-positive febrile children in south-west Nigeria. Tropical Medicine and International Health. doi:10.1111/tmi.13304
  63. Akpa C.O., Akinyemi J.O., Umeokonkwo C.D., Bamgboye A., Dahiru T., Adebowale A.S., Ajayi I.O. (2019) Uptake of intermittent preventive treatment for malaria in pregnancy among women in selected communities of Ebonyi State, Nigeria. BMC Pregnancy and Childbirth 19:457
  64. Effah, G.B., Ekpenyong, B., Babatunde, G., Ajayi, I.O., Dairo, D. (2019) Compliance with Malaria Rapid Diagnostic Test Results and Correlates among Clinicians in Uyo, Akwa Ibom State, Nigeria: 2018. Open Journal of Epidemiology, 9:259-288.
  65. Obi I.F., Sabitu K., Olorukooba A., Adebowale A.S., Usman R., Nwokoro U., Ajumobi O., Idris S., Nwankwo L., Ajayi I.O. (2019) Health workers’ perception of malaria rapid diagnostic test and factors influencing compliance with test results in Ebonyi state, Nigeria. PLoS ONE 14(10): e0223869. pone.0223869
  66. Babalola O.J., Sambo M.N., Idris S.H., Ajayi I.O., Ajumobi O., Nguku P. (2019) Factors associated with utilization of LLINs among women of child-bearing age in Igabi, Kaduna State, Nigeria. Malar J. 18:412
  67. Adeoti O., Spiegelman D., Afonne C., Falade C.O., Jegede A.S., Oshiname F.O., Gomes M., Ajayi I.O. (2020). The Fidelity of Implementation of Recommended Care for Children with Malaria by Community Health Workers in Nigeria. Implementation Sci 15, 13.
  68. Na’uzo A.M, Tukur D., Sufyan M.B, Adebowale A.S, Ajayi I., Bamgboye E et al. (2020) Adherence to malaria rapid diagnostic test result among healthcare workers in Sokoto metropolis, Nigeria. Malar J. 19:2
  69. Kodaolu M.Y, Fagbamigbe A.F, Ajayi I.O. (2020) Stocking pattern for anti‑malarial medications among proprietary patent medicine vendors in Akinyele Local Government Area, Ibadan, Nigeria. Malar J. 19:279.
  70. Ajayi I.O, Ajumobi O.O, Falade C. (2020) Malaria and COVID-19: commonalities, intersections and implications for sustaining malaria control. Pan African Medical Journal, 37(Supp 1):1.
  71. Obagha E.C., Ajayi I., Abdullahi A.A., Umeokonkwo C.A. (2020) Clients’ satisfaction with preventive services for malaria during pregnancy in Anambra state, Nigeria. BMC Public Health, 20:1660
  72. Gumel S.D., Ibrahim A., Olayinka A.T., Ibrahim M.S., Balogun M.S., Dahiru A., Ajayi I., Ajumobi O., Ahmadu I., Song A., Maifada A.I., Abdullahi H. (2020). HIV-malaria co-infection and its determinants among patients attending antiretroviral treatment clinic in Zaria, North-Western Nigeria. Accepted for publication in Journal of Intervention Epidemiology and Public Health, Published Feb 2021.
  73. Orimadegun A.E., Funwei R.I., Michael O.S., Ogunkunle O.O., Badejo J.A., Olusola F., Ajayi I.O., et al. (2021) Comparative evaluation of three histidine-rich protein-2 based rapid diagnostic test, microscopy and PCR for guiding malaria treatment in Ibadan, Southwest Nigeria. Niger J Clin Pract; 23:496-504
  74. Ajayi I.O., Jegede S., Ogunwale A.O., Ogundairo J., Olaleye O.S., Oshiname F.O., Falade C.O. (2021) Community acceptance, satisfaction, and support for case management of malaria of various degrees in selected rural communities in Ibadan, Oyo-State. Ghana Med J; 55(3): 198-205
  75. Orimadegun A., Dada-AdegbolaO., Michael O.S, Adepoju A.A., Funwei R.E., Olusola F.I., Ajayi I.O. et al. (2022) Non-Malaria Causes of Fever Among Under 5 Children with Negative Results for Malaria Rapid Diagnostic Test in South-Western Nigeria. Accepted for publication in Journal of Tropical Pediatrics; July 2022
  76. Uhomoibhi P., Okoronkwo C., Ajayi I.O., Mokuolu O., Maikore I., Fagbamigbe A., et al. (2022) Drivers of long-lasting insecticide-treated net utilisation and parasitaemia among under-five children in 13 States with high malaria burden in Nigeria. PLoS ONE 17(5): e0268185.

 B. Cancer


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  2. Ajayi I.O. and Adewole, I.F. (1998). Determinants of utilization of cervical cancer screening facility in a low socio-economic setting in Nigeria. Journal of Obstetrics and Gynaecology, 18 (2): 154-158.
  3. Ajayi I.O. and Adewole, I.F. (1998). Knowledge and attitude of general outpatient attendants in Nigeria to cervical cancer. Central African Journal of Medicine, 44(2):41-43.
  4. Ajayi I.O. and Adebamowo, C.A. (1999): Knowledge, belief and attitudes toward breast cancer in Southwestern Nigeria. Cancer strategy, 1: 20-24.
  5. Ajayi, I.O., Soyanwo O.A., Adebamowo C.A., Amanor-Boadu S.D. (2000): Availability of opiods for cancer pain in Nigeria. Nigerian Journal of Surgery Vol. 7. No.1, 25-28.
  6. Ajayi I.O. (2000): Knowledge and attitude of women concerning Papanicolaou smear: A comparative study of two settings in Ibadan, Nigeria. Cancer strategy, 2: 93-97.
  7. Faponle A.F, Soyannwo O.A, Ajayi I.O (2001). Post-operative pain therapy: a survey of prescribing patterns and adequacy of analgesia in Ibadan, Nigeria. The Central African Journal of Medicine, Vol. 47. No. 3, 70-74.
  8. Ajayi I.O. and Adewole, I.F. (2002): Breast and Cervical Cancer Screening Activities among Family Physicians in Nigeria. African Journal of Medicine and Medical Sciences, 31: 305-309.
  9. Thomas J.O., Herrero R., Omigbodun A.A., Ojemakinde O., Ajayi I.O., Fawole, O., Oladepo, O., Smith J.S., Arslan A., Munoz N., Snidjders P.J.F., Meijer C.J.L.M., Franceschi A. (2004): Prevalence Human Papilloma Virus infection in women in Ibadan, Nigeria: A population-based study. British Journal of Cancer, 90: 638-645.
  10. Thomas J.O., Babarinsa I.A., Ajayi I.O., Fawole O., Ojemakinde K.O. (2005): Mobilisation for cervical cancer screening: lesson from a poor urban Yoruba community in Nigeria. African Journal of Medicine and Medical Sciences, 34(1): 81-85.
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  15. Maucort-Boulch D., Franceschi S., Plummer M., and the IARC HPV Prevalence Surveys Study Group (2008): International Correlation between Human Papillomavirus Prevalence and Cervical Cancer Incidence. Cancer Epidemiology Biomarkers Prevention, 17(3): 717–720.
  16. Vaccarella S., Herrero R., Snijders P.J.F., Dai M., Thomas J.O., Hieu N.T., Ferreccio C., Matos E., Posso H., Silvia de Sanjose S., Shin H.R., Sukvirach S., Lazcano-Ponce E., Mun˜oz , Meijer C.J.L.M., Franceschi S. and the IARC HPV Prevalence Surveys (IHPS) Study Group (2008): Smoking and human papillomavirus infection: pooled analysis of the International Agency for Research on Cancer HPV Prevalence Surveys. International Journal of Epidemiology, 37: 536–546.
  17. Thomas J.O., Ojemakinde K.O., Ajayi I.O., Omigbodun A.O., Fawole, O.I., Oladepo O. (2012): Population-based prevalence of abnormal cervical cytology findings and local risk factors in Ibadan, Nigeria: implications for cervical cancer control programs and HPV immunization, Acta Cytologica. 56: 251. DOI: 10.1159/000337444
  18. Eyelade, R.O., Ajayi, I.O., Elumelu, T.N., Soyannwo, O.A., Akinyemi, A.O. (2012). Oral morphine effectiveness in Nigerian patients with advanced cancer. Journal of Pain and Palliative Care Pharmacotherapy, (26), 24
  19. Ekore R.I., Bolatito L.A., Ekore J., Ajayi I. (2012). Paternalism and the Utilization of Advance Care Directives. Journal of Palliative Care Medicine, Vol. 2. 135. doi:10.4172/2165- 7386.100013
  20. Ajayi I.O., Onibokun A., Soyannwo O. (2013): Breast and Cervical Cancers Awareness and Screening Practices among Rural Women in Ona-Ara Local Government Area, Ibadan, Nigeria. African Journal of Biomedical Research, 16 (2): 95-99.
  21. Obajimi O.M., Ajayi I.O., Oluwasola A.O., Adedokun B.O., Adeniji-Sofoluwe A.T., Mosuro O.A., Akingbola T.S., Bassey O.S., Umeh E., Soyemi T.O., Adegoke F., Ogungbade I., Ukaigwe C., Olopade O.I. (2013): Level of awareness of mammography among women attending outpatient clinics in a teaching hospital in Ibadan, South-West Nigeria BioMed Central Public Health, 13: 40. DOI: 10.1186/1471-2458-13-40.
  22. Powell, R.A., Harding, R., Namisango, E., Katabira, E., Gwyther, L., Radbruch, L., Murray, S.A., El- Ansary, M., Leng, M., Ajayi, I.O. et al(2013). Palliative Care Research in Africa: Consensus Building for a Prioritized Agenda. Journal of Pain and Symptom Management, 47 (2), 315-324.
  23. Powell, R.A., Harding, R., Namisango, E., Katabira, E., Gwyther, L., Radbruch, L., Murray, S.A., El-Ansary, M., Ajayi, I.O., Mwangi-Powell, F. (2013): Palliative care research in Africa: an overview. European Journal of Palliative Care, Vol. 20. No. 4, 162 -167.
  24. Oladimeji K.E, Ajayi I.O, Okareh O.T. (2013) Risk Factors Associated with Breast Cancer among Women in Warri and lbadan, Nigeria. Nigerian Health Journal, 13 (3): 113-120.
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  26. Oladimeji K.E., Ajayi I.O., Tsoka- Gwegweni J.M., Jegede O., Oladimeji O. (2016). Breast cancer risk factors among women dwelling in industrialized cities in Southern Nigeria. European Journal of Pharmaceutical and Medical Research, 3(4): 36-44.
  27. Ajayi I.O., Ogunbode M.A., Adeniji-Sofoluwe A.T., Mosuro O.A., Ladipo M.M.A., Oluwasola A.O., et al. (2016) Pattern of breast cancer risk factors among pre and post-menopausal women at a primary care clinic in Nigeria. Tropical Journal of Obstetrics and Gynaecology, 33 (2): 220-227.
  28. Olanloye E.E., Ajayi I.O., Akpa O.M. (2017) Practice and Efficiency of Breast Self-Examination among Female Health Workers In A Premier Tertiary Hospital In Nigeria. Journal of American Science, 13(2):121-131.
  29. Odedina S.O., Ajayi I.O., Morhason-Bello I.O., Adeniji-Sofoluwe A., Huo D., Olopade O.I., Ojengbede O. (2018) Profile of Women with Breast Disorders in Pregnancy and Lactation and Additional Investigation Uptake. Journal of Global Oncology, 4 suppl 3: 30s-30s.
  30. Odedina S.O, Ajayi I.O, Adeniji-Sofoluwe A., Morhason-Bello I.O, Huo D., Olopade O.I, Ojengbede O.A. (2018) A longitudinal study of the prevalence and characteristics of breast disorders detected by clinical breast examination during pregnancy and six months postpartum in Ibadan, Southwestern Nigeria. BMC Women's Health. 18:152
  31. Boniface I., Bello S., Ajayi I.O. (2022) Risk Factors of Prostate Cancer Among Patients Diagnosed at The University College Hospital, Ibadan, Nigeria: A Case Control Study”. Accepted for publication in International Journal of Epidemiologic Research, JER-2202-1454 June 2022
  32. Odedina S., Ajayi I.O., Morhason-Bello I., Adedokun B., Huo D., Olopade O., Ojengbede O. (2022) Factors associated with breast disorders detected by clinical breast examination during pregnancy and six months postpartum in Ibadan, South-western Nigeria. Accepted for Publication in Journal of Public Health in Africa [paper 1812">
  33. Sowemimo I., Ajayi I., Akpa O., Ossai E. (2015). Prevalence of hypertension and associated factors among residents of Ibadan-north local government area of Oyo state, Nigeria. Nigerian Journal of Cardiology, 33: e31-e31
  34. Guwatudde D., Nankya-Mutyoba J., Kalyesubula R., Laurence C., Adebamowo C., Ajayi I., Bajunirwe F., Njelekela M., Chiwanga F.S., Reid T., Volmink J., Adami H., Holmes M.D., Dalal S. (2015). The burden of hypertension in sub-saharan Africa: a four-country cross sectional study. BioMed Central Public Health, 5;15:1211.
  35. Chiwanga F.S., Njelekela M.A., Diamond M.B., Bajunirwe F., Guwatudde D., Nankya-Mutyoba J., Kalyesubula R., Adebamowo C., Ajayi I., et al. (2016). Urban and rural prevalence of diabetes and pre-diabetes and risk factors associated with diabetes in Tanzania and Uganda. Glob Health Action, 9: 31440 -
  36. Oyeniyi S., Ajayi I.O. (2016). Prevalence of Hypertension and Associated Risk Factor among Interstate Commercial Drivers in Jabi Park, Abuja, has been accepted for publication in International Journal of Medicine and Medical Sciences, 8(7): pp. 75-83.
  37. Ajayi I.O., Adebamowo C., Adami H., Dalal S., Diamond M.B., Bajunirwe F. et al. (2016). Urban–rural and geographic differences in overweight and obesity in four sub-Saharan African adult populations: a multi-country cross-sectional study. BioMed Central Public Health, 16:1126 DOI 10.1186/s12889-016-3789-z18.
  38. Ajayi I.O., Soyannwo M.A.O., Asinobi A.O., Afolabi N.B., Ayede A.I., Bamgboye E.A. (2017). Blood pressure pattern and hypertension related risk factors in an urban community in Southwest Nigeria: The Mokola hypertension initiative project, Ibadan, Nigeria. Journal of Public Health and Epidemiology, 9 (4): 51-64.
  39. Ladi-Akinyemi T.W., Ajayi I. (2017). Risk factors for chronic kidney disease among patients at Olabisi Onabanjo University Teaching Hospital in Sagamu, Nigeria: A retrospective cohort study. Malawi Med J, 29(2):166–170.
  40. Odeyinka O.T., Ajayi I.O. (2017). Prevalence of hypertension and diabetes and their determinants among commercial drivers in Ibadan metropolis, South-Western Nigeria. Nig J Cardiol, 14:75-83.
  41. Holmes M.D., Dalal S., Sewram V., Diamond M.B., Adebamowo S.N., Ajayi I.O., Adebamowo C. et al. (2018). Consumption of processed food dietary patterns in four African populations. Public Health Nutrition, 21(8):1529-1537. doi: 10.1017/S136898001700386X.
  42. Daini B.O., Ajayi I.O. (2018). Assessing the association between salt intake, weight status and blood pressure among school children in Ibadan, South-West Nigeria. Nigerian Journal of Nutritional Sciences, 39 (1).
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  44. Oguntade A.S., Ajayi I.O., Aje A., Adebiyi A.A, Ogah O.S, Adeoye A.M. (2020). Development and Validation of an Electrocardiographic Diagnostic Score of Heart Failure Among Patients with Hypertension Attending a Tertiary Hospital in Ibadan, Nigeria: The RISK-HHF Case-Control Study. Journal of The Saudi Heart Association, 32:382e394
  45. Iyer H.S, James P., Valeri L, Bajunirwe F, Nankya-Mutyoba J, Njelekela M, Chiwanga F, Sewram V., Ajayi I., Adebamowo C., Dalal S., Reid T.G., Rebbeck T.R., Adami H., Michelle D., Holmes M.D. (2020). Neighborhood Greenness and Burden of Non-communicable Diseases in Sub-Saharan Africa: A Multi-country Cross-sectional Study. Environ Res., 196:110397. PMID: 33130166; PMCID: PMC8085185113.
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  48. Olufayo O. E., Ajayi I.O., Ngene S.O. Clustering of cardiovascular disease risk factors among first-year students at the University of Ibadan, Nigeria: a cross-sectional study. Accepted for publication in Sao Paulo Medical Journal, ID SPMJ-2021-0998.R1, May, 2022
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  51. Adebusoye, L.A., Ajayi, I.O., Dairo, D., Ogunniyi, A.O. (2012). Nutritional Status of Older Persons Presenting in a Primary Care Clinic in Nigeria. Journal of Nutrition in Gerontology and Geriatrics, 31 (1): 71-85.
  52. Adu M.D., Ajayi I.O., Adu K.T. (2015). Reported Malnutrition Prevention Practices in Primary Schools in Ido Local Government Area of Ibadan, Oyo State, Nigeria. International Journal of Elementary Education, 4 (5): 100-107. doi: 10.11648/j.ijeedu.20150405.11
  53. Adejugbagbe A.M., Ajayi I.O., Oki O.P. (2019) Breastfeeding Practices and Associated Factors among Mothers of Children Aged 6-23 Months in Konduga Local Government Area, North East Nigeria European Journal of Nutrition & Food Safety, 2019: 94-103. DOI:10.9734/ejnfs/2019/v10i130101
  54. Fagbamigbe A.F., Adebowale A.S., Ajayi I. (2019) An assessment of the nutritional status of ART receiving HIV orphaned and vulnerable children in south-west Nigeria. Heliyon 5 (2019):e02925
  55. Amuzie C.I., Ajayi I., Bamgboye E., Umeokonkwo C.D., Akpa O.C., Agbo U.O., Nwamoh U.N., Izuka M., Balogun M.S. Physical inactivity and perceived environmental factors: a cross-sectional study among civil servants in Abia State, Southeastern Nigeria. Pan African Medical Journal. 2022; 42:74. Published on 26 May 2022
  56. Ajayi I.O., Oyewole O.E., Onabanjo O.O., Olawuwo M., Salisu D., Ogunwale A.O. A qualitative exploration of knowledge, practices and training needs on safe use of cooking salt among national home-grown school feeding programme food vendors in Southwest Nigeria. Manuscript (RJFSN-08.07.22-146) accepted for publication in the Research Journal of Food Science and Nutrition. 18 August 2022.

    E. Outbreak and epidemic response and surveillance 


    1. Preacely, N., Biya, O., Gidado, S., Ayanleke, H., Kida, M., Akhimien, M., Abubakar, A., Kurmi, I., Ajayi,I., Nguku, P., Akpan, H. (2012). Hospital-Based Mortality in Federal Capital Territory Hospitals-Nigeria, 2005- 2008. The Pan African Medical Journal, 11:66.
    2. Fatiregun, A.A., Ajayi, I.O., Isere, E.E. (2013): Cholera outbreak in a southwest community of Nigeria: investigation of risk factors and evaluation of a district surveillance system. West African Journal of Medicine, 32 (3): 173-179.
    3. Waziri N.E, Nguku P., Olayinka A., Ajayi I., Kabir J., Okolocha E., Tseggai T., Joannis T., Okewole P., Kumbish P., Ahmed M., Lombin L, Nsubuga P. (2014). Evaluating a surveillance system: live-bird market surveillance for highly pathogenic avian influenza, a case study. Pan Afr Med J., 18(Supp 1):11.
    4. Olugbade O.T, Ladipo T.O, Israel O., Adedire E.O, Adedokun B., Ajumobi O., Olayinka A., Ajayi I. (2012). Malaria surveillance system evaluation, Oyo state, Nigeria 2012. International Journal of Infectious Diseases, 21: 275-276.
    5. Isere E.E., Fatiregun A.A., Ajayi I.O. (2015). An overview of disease surveillance and notification system in Nigeria and the roles of clinicians in disease outbreak prevention and control. Nigerian Medical Journal, 56 (3): 161-168.
    6. Adedire E. B., Usman A. B., Abbass G. A., Ajayi I. O., Fawole O. I. (2015). Descriptive Characterization of Cholera Epidemic Caused by Break Down of Public Pipe Borne Water Supply-Egbeda, Oyo State Nigeria September 2013. International Journal of Epidemiology, 44 (Supplement 1): i153.
    7. Aladeniyi O.I, Dairo M.D., Akpan O.M., Ajayi I.O. (2015). Effect of education on knowledge of acute flaccid paralysis reporting among private medical doctors in Ondo State, Nigeria. Journal of Medicine and Medical Science, 6: 1-8.
    8. Adedire E., Ajayi I., Fawole O., Ajumobi O., Kasasa S., Wasswa P., Nguku P. (2016). Immunisation coverage and its determinants among children aged 12-23 months in Atakumosa-west district, Osun State Nigeria: A cross-sectional study. BMC Public Health, 16(1):905. doi: 10.1186/s12889-016-3531-x.
    9. Bajoga U., Balarabe H., AJumobi O., Dalhat M., Sule I, Ibrahim M.S., Adebowale S.A., Adedokun B., Yahaya M., Ajayi I.O., Nguku P., Ajumobi O. (2019). Trends and pattern of Malaria cases in Kaduna State using routine Surveillance data, 2011 – 2015. Pan African Medical Journal, 32(1):8. [doi: 10.11604/pamj.supp.2019.32.1.13735">
    10. Abbas G., Obembe T.A., Bankole O.T., Ajayi I. (2019). Assessing knowledge and practice of cholera prevention and management procedures among primary health care workers in a Southwestern State, Nigeria. Afr. J. Med. Med. Sci., 48:233-242.
    11. Osarhiemen I., Adebowale A.S., Umeokonkwo, C.D., Bamgboye E.A., Gobir A.A., Jiwok J.C., Tukur D, Ajayi I.O. (2020). Analyses of case-based surveillance data on malaria in pregnancy in Plateau State, Nigeria 2013–2017. Accepted for publication in Proceedings of Singapore Healthcare, 1–8 DOI: 10.1177/2010105820952482
    12. Adedire E.B., Ajumobi O., Bolu O., Nguku P., Ajayi I. (2021) Maternal knowledge, attitude, and perception about childhood routine immunization program in Atakumosa-west Local Government Area, Osun State, Southwestern Nigeria. Pan African Medical Journal. 2021;40:(Supp 1):8. Published on 12 Nov 2021
    13. Isere E.E., Ajayi I, Adejugbagbe A.M., Abiona S.F., Omorogbe N.E., Akinrinade O.T., Okunade F.T., Folarin T. (2022) Perceived Risk and Associated Factors towards COVID-19 infection among the residents of Ondo State, Southwest Nigeria. Global Biosecurity, 2022;4.
    14. Utulu R., Ajayi I.O., Bello S., Balogun M.S., Madubueze U.C., Adeyemi I.T, Omoju O.T., Adeke A.S., Adenekan A. O., Iyare O. (2022) Risk factors for COVID-19 infection and disease severity in Nigeria: a case-control study. Pan African Medical Journal. 2022;41:317. Published on 20 Apr 2022

    F. Training, Building capacity and policy


  1. Tobin A.O., Ajayi I.O. (2016). Effect of training intervention on primary health care workers' knowledge of oral health - Savannah Journal of Medical Research and Practice, 5 (1):16-22.
  2. Ajayi I.O., Ughasoro M.D., Ogunwale A., Odeyinka O., Babalola O., Sharafadeen S., Adamu A.Y., Ajumobi O., Orimogunje T., Nguku P. (2017). A qualitative exploration of malaria operational research situation in Nigeria. PLoS ONE, 12(11): e0188128.
  3. Ajayi I.O., Jegede A.S., Falade C.O., Sommerfeld J. (2013). Assessing the resources for implementing a community directed intervention (CDI) strategy in delivering multiple health interventions in urban poor communities in southwestern Nigeria: a qualitative study. Bio Med Central Infectious Diseases of poverty, 2:25.
  4. Onyiah P., Adamu A.Y, Afolabi R.F., Ajumobi O., Ughasoro M.D., Odeyinka O., Nguku N., Ajayi I.O. (2018). Bottlenecks, Concerns and Needs in Malaria Operations Research: The Perspectives of Key Stakeholders in Nigeria. BMC Res Notes, 11:272
  5. Ajumobi, Uhomoibhi P., Onyiah P., Babalola O., Salami S., Ughasoro M., Adamu A.Y., Odeyinka O., Orimogunje T., Maikore I., Shekarau E., Ogunwale A., Afolabi R., Udeh S., Ndubuisi A., Umoette N., Nguku P., Ajayi I.O. (2018). Setting a Nigeria national malaria operational research agenda: the process. BMC Health Services Research, 18:459.
  6. Jegede A., Willey B., Hamade P., Oshiname F., Chandramohan D., Ajayi I., Falade C., Baba E., Webster W. (2020). Evaluation of a capacity building intervention on malaria treatment for under‑fives in rural health facilities in Niger State, Nigeria. Malar J, 19:90.
  7. Abubakar A.A., Sabitu K., Jansen A., Preacely N., Sufiyan M.B., Idris S.H., Gobir A.A., Ibrahim M.S., Ajayi I.O. (2016). How effective are trained role model caregivers in prompt presumptive treatment of malaria of under 5 children in Kaduna state, north-western Nigeria? Research Journal of Health Sciences, 4(2): 133-140.
  8.  Paulus, J., Santoyo-Vistrain, R., Havelick, D., Cohen, A., Kalyesubula, R., Ajayi, I., Mattsson, J., Olov Adami, H., Dalal, S. (2012): Global Teaching and Training Initiatives for Emerging Cohort Studies. Journal of Epidemiology and Global Health, 2 (3): 125-133.
  9. Powell, R.A., Harding, R., Namisango, E., Katabira, E., Gwyther, L., Radbruch, L., Murray, S.A., El-Ansary, M., Ajayi, I.O., Mwangi-Powell, F. (2013): Palliative care research in Africa: an overview. European Journal of Palliative Care, 20 (4): 162 -167. 
  10. Powell, R.A., Harding, R., Namisango, E., Katabira, E., Gwyther, L., Radbruch, L., Murray, S.A., El-Ansary, M., Leng, M., Ajayi, I.O., Blanchard, C., kariuki, H., Kasirye, I., Namukwaya, E., Gafer, N., Casarett, D., Atieno, M., Mwangi-Powell, F. (2013): Palliative Care Research in Africa: Consensus Building for a Prioritized Agenda. Journal of Pain and Symptom Management, 47(2): 315-324. 
  11. Nguku P., Oyemakinde A., Sabitu K., Olayinka A., Ajayi I., Fawole O., Babirye R., Gitta S., Mukanga D., Waziri N., Gidado S., Biya O., Gana C., Ajumobi O,Abubakar A., Sani-Gwarzo N., Ngobua S., Oleribe O., Poggensee G., Nsubuga P., Nyager J., Nasidi A. (2014) Training and service in Public Health, Nigeria Field Epidemiology and Laboratory Training, 2008-2014. Pan African Medical Journal, 21 (18 Suppl 1):2. doi: 10.11694/pamj.supp.2014.18.1.4930. 

    G. Other Implementation research related publications


    1. Kebede A.S., Ajayi I.O., Arowojolu A.O. (2019). Effect of enhanced reminders on postnatal clinic attendance in Addis Ababa, Ethiopia: a cluster randomized controlled trial, Global Health Action, 12:1, 1609297.
    2. Ajayi, I.O., Osakinle, D.C., Osakinle, E.O. (2013). Quality assessment of the practice of focused antenatal care (FANC) in rural and urban primary health centres in Ekiti State. Open Journal of Obstetrics and Gynecology, 3: 319-326.
    3. Obembe T., Bankole O., Gbolahan A., Ajayi I.O. (2020). Healthcare service payment methods and coping strategies of nomads and labor migrants in Oyo State, Nigeria. Am J Trop Med Hyg, 102(5):1022-1029. doi: 10.4269/ajtmh.18-0615.

    H. Other publications


      1. Ajayi M.T., Solomon O., Ajayi I.O. (2007). Farmers’ Perception and knowledge of health problems affecting their Agricultural productivity in Edo State: Implication for extension service. Journal of Agriculture and Social Research, 7 (2): 38-45.
      2. Ajayi I.O. (2001). Determinants of health check-up practice among women in a low socio-economic setting in Ibadan, Oyo state, Nigeria. African Journal of Biomedical Research, 4: 7-11.
      3. Ajayi I.O. (2002): Patient waiting time at the general outpatient clinic in Ibadan: can it be put to better use? Patient Education and Counselling, 47: 121-126.
      4. Ajayi I.O. (2003): The consultation style of doctors at an Outpatient Clinic in Ibadan, Oyo State, Nigeria: Are patients participating? Nigerian Journal of Clinical Practice, 6(1): 10-16.
      5. Ajayi I.O., Olumide E.A., Oyewole O. (2005): Patient satisfaction with the services provided at a General Outpatients’ Clinic, Ibadan, Oyo State. African Journal of Medicine and Medical Sciences, 34 (2): 133-140.
      6. Ekore R.I., Adeyanju S., Ajayi I.O., Arije A. (2009). Herpes Zoster Oticus (Ramsay-Hunt Syndrome) In Pregnancy. The Internet Journal of Otorhinolaryngology, 8 (2).
      7. Muyibi A.S., Ajayi I.O., Irabor A.E., Ladipo M.M.A. (2010). Relationship between adolescents’ family function with socio-demographic characteristics and behaviour risk factors in a primary care facility. African Journal of Primary Health Care and Family Medicine, 2 (1): 1-7.
      8. Ekore R.I., Bolatito L.A., Ekore J., Ajayi I. (2012). Paternalism and the Utilization of Advance Care Directives. Journal of Palliative Care Medicine, 2:135. doi:10.4172/2165- 7386.1000135
      9. Irabor A.E., Ajayi I.O., Olofin O., Ariba A.J., Ladipo M.M.A., Adeniran A., Fadipe O.O., Sikuade O. (2012). Patient Centered Clinical Methods in Primary Care. Nigerian Journal of Family Practice, 3 (1): 39-46.
      10. Ogunbode A.M., Ladipo M.M.A., Ajayi I.O., Alonge T.O. (2013). Socio-demographic and clinical correlates of knee pain in adult women attending a primary care clinic. The Nigerian Postgraduate Medical Journal, 20 (2): 136-139.
      11. Ajayi I.O., and Osakinle D.C. (2013): Socio Demographic Factors Determining the Adequacy of Antenatal Care among Pregnant Women Visiting Ekiti State Primary Health Centers. Online Journal of Health Allied Sciences, 12 (2): 4.
      12. Okechukwu T. and Ajayi I.O. (2016). Prevalence of Antenatal Depression and Associated Risk Factors among Pregnant Women Attending Antenatal Clinics in Abeokuta North Local Government Area, Nigeria. Depress Res Treat., 2016:4518979.doi: 10.1155/2016/4518979
      13. Bamgboye E.A., and Ajayi I. (2016). Changing patterns of unmet needs for family planning among women of reproductive age in Nigeria. African Journal of Reproductive Health, 20 (3): 127-135.
      14. Diamond M.B., Dalal S., Adebamowo C., Guwatudde D., Laurence, Ajayi I.O., Bajunirwe F., Njelekela M.A., Chiwanga F., Adami H., Nankya-Mutyoba J., Kalyesubula R., Reid T.G., Hemenway D., Holmes M.D. (2018). Prevalence and risk factor for injury in sub-Saharan Africa: a multicountry study. Inj Prev, 24(4):272-278. doi: 10.1136/injuryprev-2016-042254.
      15. Babatunde O.A., Adebamowo S.N., Ajayi I.O., Adebamowo C.A. (2018) Neurodevelopmental outcomes of twins compared with singleton children: a systematic review. Twin Res Hum Genet., 21(2):136-145. doi: 10.1017/thg.2018.3.
      16. Bajunirwe F., Maling S., Adami H-O., Ajayi I.O., Volmink J., Adebamowo C. et al. (2018). Burden of depressive symptoms and non-alcohol substance abuse; and their association with alcohol use and partner violence: a cross-sectional study in four sub-Saharan Africa countries. Global Mental Health, 5, e31:1 -11. doi:10.1017/gmh.2018.22
      17. Ajayi I.O, Adebowale S., Akinyemi J.O, Bamgboye E.A. Emerging, re-emerging disease, population movement and health security: In Total Health for All: Strategies for health security in Nigeria. (2019) African Journal of Medicine and Medical Sciences, 48 (supplement 1).
      18. Akanbi K., Ajayi I., Fayemiwo S., Gidado S., Oladimeji A., Nsubuga P. (2019) Predictors of tuberculosis treatment success among HIV-TB co-infected patients attending major tuberculosis treatment sites in Abeokuta, Ogun State, Nigeria. The Pan African Medical Journal 32 (Suppl 1)
      19. Akpuh N., Ajayi I., Adebowale A., Suleiman H.I., Nguku P., Dalhat M., Adedire E. (2020). Occupational exposure to HIV among healthcare workers in PMTCT sites in Port Harcourt, Nigeria. BMC Public Health, 20:451.
      20. Bamgboye E.A., Ajayi I.O., Ige O.M. (2020). Correlates of treatment outcome among hospitalized multidrug resistant tuberculosis patients co infected with HIV at a Specialist treatment center in South Western Nigeria. Afr. J. Med. Med. Sci., 49: 135-142.
      21. Jegede A., Ajayi I., Akintola A., Falade C., Dipeolu I.O, Cadmus S., Aderemi A., Olaifa A., Olatoye O., Akinyemi O. et al. (2020). Ethical issues in the COVID-19 pandemic control preparedness in a developing economy. Pan African Medical Journal, 35(2):95. [doi:10.11604/pamj.supp.2020.35.2.23121">

    J. Dissertations, Theses & Inaugural Lecture

      1. Ajayi I.O. Health Promotion Practices of Family Medicine Residents of University of Western Ontario, London, Canada” 1994 Thesis - For the award of Master of Clinical Science in Family Medicine
      2. Ajayi I.O. Evaluation of nutritional status of first year primary school children in Ibadan, Oyo State. 1994. Dissertation – For the award of Fellowship by the National Post-Graduate Medical College of Nigeria, 1994
      3. Ajayi I.O. A casebook in Family Medicine. Submitted to the National Post-graduate Medical College of Nigeria, 1994 for the award of Fellowship
      4. Ajayi I.O. Papanicolaou Smear: Knowledge, Attitudes and Practice of Women Attending the General Outpatients’ Department, University College Hospital, Ibadan. 1994. Thesis submitted to the West African College of Physicians, Faculty of General Practice for the award of Fellowship.
      5. Ajayi I.O. Patients satisfaction with the quality services in the General Outpatients’ Department of the University College Hospital, Ibadan, Nigeria. 2000. Dissertation - Submitted to the Postgraduate School, University of Ibadan, Nigeria for the award of Master in Public Health degree.
      6. Ajayi I.O. Development and Assessment of a treatment guideline to improve home management of malaria in children in Ona-Ara local Government Oyo state, Nigeria. 2006. Thesis - Submitted to the University of Ibadan for the award of Ph.D. degree.
      7. Ajayi I.O. Who will go? Send me: Moving effective malaria interventions to mothers and caregivers in the community. An Inaugural lecture: 2019/20209. Delivered on March O5 2020. University of Ibadan

    (iii) Patents/country of patenting (if any): Nil


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