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

Seroprevalence of Immunoglobulin G against measles and rubella over a 12-year period (2009-2021) in Kilifi, Kenya and the impact of the Measles-Rubella (MR) vaccine campaign of 2016.
Mburu, C. N., Ojal, J., Selim, R., Ombati, R., Akech, D., Karia, B., Tuju, J., Sigilai, A., Smits, G., van Gageldonk, P. G. M., van der Klis, F. R. M., Flasche, S., Kagucia, E. W., Scott, J. A. G., Adetifa, I. M. O.
Vaccine, (2025). 61:127425

Profile: The Kenya Multi-Site Serosurveillance (KEMIS) collaboration.
Kagucia, E. W., Voller, S., Ziraba, A. K., Bigogo, G., Munywoki, P. K., Makobu, K., Nokes, D. J., Nyagwange, J., Orlendo, C., Akech, D., Sigilai, A., Onyango, C., Juma, B., Herman-Roloff, A., Munyua, P., Apondi, C., Lidechi, S., Audi, A., Ouma, A., Aol, G., Misore, T., Nasimiyu, C., Onyango, D., Lo, T., Kasera, K., Jalang'o, R., Kingwara, L., Adetifa, I., Etyang, A. O., Warimwe, G., Agweyu, A., Scott, J. A. G.
Gates Open Res, (2024). 8:60

Development of an oral regimen of unithiol for the treatment of snakebite envenoming: a phase 1 open-label dose-escalation safety trial and pharmacokinetic analysis in healthy Kenyan adults.
Abouyannis, M., Nyambura, Y. K., Ngome, S., Riako, D., Musyoki, J., Muiruri, C., Orindi, B., Else, L., Amara, A., Dickinson, L., Clare, R. H., Albulescu, L. O., Westhorpe, A. P., Kool, J., Adetifa, I., Ndungu, F. M., FitzGerald, R., Khoo, S., Lalloo, D. G., Casewell, N. R., Hamaluba, M.
EBioMedicine, (2025). 113:105600

Profile: The Kenya Multi-Site Serosurveillance (KEMIS) collaboration .
Kagucia, E. W., Voller, S., Ziraba, A. K., Bigogo, G., Munywoki, P. K., Makobu, K., Nokes, D. J., Nyagwange, J., Orlendo, C., Akech, D., Sigilai, A., Onyango, C., Juma, B., Herman-Roloff, A., Munyua, P., Apondi, C., Lidechi, S., Audi, A., Ouma, A., Aol, G., Misore, T., Nasimiyu, C., Onyango, D., Lo, T., Kasera, K., Jalang'o, R., Kingwara, L., Adetifa, I., Etyang, A. O., Warimwe, G., Agweyu, A., Scott, J. A. G.
Gates Open Res, (2024). 8:

Tungiasis among children in Kenya is associated with poor nutrition status, absenteeism, poor school performance and high impact on quality of life.
Elson, L., Kamau, C., Koech, S., Muthama, C., Gachomba, G., Sinoti, E., Chondo, E., Mburu, E., Wakio, M., Lore, J., Maia, M., Adetifa, I., Orindi, B., Bejon, P., Fillinger, U.
PLoS Negl Trop Dis, (2024). 18:e0011800