Epidemiology & Demography

Bio

Ifedayo is a Clinical Epidemiologist in the Epidemiology and Demography Department at the Programme and an Associate Professor of Infectious Diseases Epidemiology at the London School of Hygiene and Tropical Medicine. He obtained his medical degree at the University of Ilorin, Nigeria, trained in Paediatrics and Child Health at the Lagos University Teaching Hospital and received the Fellowship of the West Africa College of Physicians in Paediatrics in 2005. He studied Epidemiology at the London School of Hygiene and Tropical Medicine and was awarded his MSc by the University of London in 2009. He got his PhD from the University of Amsterdam in 2012 for research in Tuberculosis Epidemiology. He was awarded the MRC/DFID African Research Leader Fellowship in 2018, is a member of the Kenyan National Immunisation Coordinating Committee, and a member of the World Health Organisation, Africa Region’s (WHO-AFRO) Regional Immunisation Technical Advisory Group. He is also the Current Director General of NCDC in Nigeria

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Current Work

His research interests are in vaccine impact/effectiveness studies, innovative approaches/surveillance tools for monitoring vaccination, Tuberculosis Epidemiology, and evidence synthesis including systematic reviews.

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Recent publications

WHO preferred product characteristics for monoclonal antibodies for passive immunization against respiratory syncytial virus (RSV) disease in infants - Key considerations for global use.
Sparrow, E., Adetifa, I., Chaiyakunapruk, N., Cherian, T., Fell, D. B., Graham, B. S., Innis, B., Kaslow, D. C., Karron, R. A., Nair, H., Neuzil, K. M., Saha, S., Smith, P. G., Srikantiah, P., Were, F., Zar, H. J., Feikin, D.
Vaccine, (2022). 40:3506-3510

TRUE-1: Trial of Repurposed Unithiol for snakebite Envenoming phase 1 (safety, tolerability, pharmacokinetics and pharmacodynamics in healthy Kenyan adults).
Abouyannis, M., FitzGerald, R., Ngama, M., Mwangudzah, H., Nyambura, Y. K., Ngome, S., Riako, D., Babu, L., Lewa, F., Else, L., Dily Penchala, S., Orindi, B., Mumba, N., Kalama, B., Ndungu, F. M., Adetifa, I., Khoo, S., Lalloo, D. G., Casewell, N. R., Hamaluba, M.
Wellcome Open Res, (2022). 7:90

The importance of supplementary immunisation activities to prevent measles outbreaks during the COVID-19 pandemic in Kenya.
Mburu, C. N., Ojal, J., Chebet, R., Akech, D., Karia, B., Tuju, J., Sigilai, A., Abbas, K., Jit, M., Funk, S., Smits, G., van Gageldonk, P. G. M., van der Klis, F. R. M., Tabu, C., Nokes, D. J., Lshtm Cmmid Covid- Working Group., Scott, J., Flasche, S., Adetifa, I.
BMC Med, (2021). 19:35

Upper airways colonisation of Streptococcus pneumoniae in adults aged 60 years and older: A systematic review of prevalence and individual participant data meta-analysis of risk factors.
Smith, E. L., Wheeler, I., Adler, H., Ferreira, D. M., Sa-Leao, R., Abdullahi, O., Adetifa, I., Becker-Dreps, S., Esposito, S., Farida, H., Kandasamy, R., Mackenzie, G. A., Nuorti, J. P., Nzenze, S., Madhi, S. A., Ortega, O., Roca, A., Safari, D., Schaumburg, F., Usuf, E., Sanders, E. A. M., Grant, L. R., Hammitt, L. L., O'Brien, K. L., Gounder, P., Bruden, D. J. T., Stanton, M. C., Rylance, J.
J Infect, (2020). 81:540-548

Impact of the Introduction of Rotavirus Vaccine on Hospital Admissions for Diarrhea Among Children in Kenya: A Controlled Interrupted Time-Series Analysis.
Otieno, G. P., Bottomley, C., Khagayi, S., Adetifa, I., Ngama, M., Omore, R., Ogwel, B., Owor, B. E., Bigogo, G., Ochieng, J. B., Onyango, C., Juma, J., Mwenda, J., Tabu, C., Tate, J. E., Addo, Y., Britton, T., Parashar, U. D., Breiman, R. F., Verani, J. R., Nokes, D. J.
Clin Infect Dis, (2020). 70:2306-2313