Epidemiology & Demography

Biography

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

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.

Collaborations

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Project Research

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Publications

Impact of COVID-19 on mortality in coastal Kenya: a longitudinal open cohort study.
Otiende, M., Nyaguara, A., Bottomley, C., Walumbe, D., Mochamah, G., Amadi, D., Nyundo, C., Kagucia, E. W., Etyang, A. O., Adetifa, I. M. O., Brand, S. P. C., Maitha, E., Chondo, E., Nzomo, E., Aman, R., Mwangangi, M., Amoth, P., Kasera, K., Ng'ang'a, W., Barasa, E., Tsofa, B., Mwangangi, J., Bejon, P., Agweyu, A., Williams, T. N., Scott, J. A. G.
Nat Commun, (2023). 14:6879

SARS-CoV-2 seroprevalence and implications for population immunity: Evidence from two Health and Demographic Surveillance System sites in Kenya, February-December 2022.
Kagucia, E. W., Ziraba, A. K., Nyagwange, J., Kutima, B., Kimani, M., Akech, D., Ng'oda, M., Sigilai, A., Mugo, D., Karanja, H., Gitonga, J., Karani, A., Toroitich, M., Karia, B., Otiende, M., Njeri, A., Aman, R., Amoth, P., Mwangangi, M., Kasera, K., Ng'ang'a, W., Voller, S., Ochola-Oyier, L. I., Bottomley, C., Nyaguara, A., Munywoki, P. K., Bigogo, G., Maitha, E., Uyoga, S., Gallagher, K. E., Etyang, A. O., Barasa, E., Mwangangi, J., Bejon, P., Adetifa, I. M. O., Warimwe, G. M., Scott, J. A. G., Agweyu, A.
Influenza Other Respir Viruses, (2023). 17:e13173

National prevalence and risk factors for tungiasis in Kenya.
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.
Infect Dis Poverty, (2023). 12:85

Population immunity to pneumococcal serotypes in Kilifi, Kenya, before and 6 years after the introduction of PCV10 with a catch-up campaign: an observational study of cross-sectional serosurveys.
Gallagher, K. E., Adetifa, I. M. O., Mburu, C., Bottomley, C., Akech, D., Karani, A., Pearce, E., Wang, Y., Kagucia, E. W., Goldblatt, D., Hammitt, L. L., Scott, J. A. G.
Lancet Infect Dis, (2023). S1473-3099:00206-2

A long-term observational study of paediatric snakebite in Kilifi County, south-east Kenya.
Abouyannis, M., Boga, M., Amadi, D., Ouma, N., Nyaguara, A., Mturi, N., Berkley, J. A., Adetifa, I. M., Casewell, N. R., Lalloo, D. G., Hamaluba, M.
PLoS Negl Trop Dis, (2023). 17:e0010987

The impact of introduction of the 10-valent pneumococcal conjugate vaccine on pneumococcal carriage in Nigeria.
Adamu, A. L., Ojal, J., Abubakar, I. A., Odeyemi, K. A., Bello, M. M., Okoromah, C. A. N., Karia, B., Karani, A., Akech, D., Inem, V., Scott, J. A. G., Adetifa, I. M. O.
Nat Commun, (2023). 14:2666

SARS-CoV-2 seroprevalence in three Kenyan health and demographic surveillance sites, December 2020-May 2021.
Etyang, A. O., Adetifa, I., Omore, R., Misore, T., Ziraba, A. K., Ng'oda, M. A., Gitau, E., Gitonga, J., Mugo, D., Kutima, B., Karanja, H., Toroitich, M., Nyagwange, J., Tuju, J., Wanjiku, P., Aman, R., Amoth, P., Mwangangi, M., Kasera, K., Ng'ang'a, W., Akech, D., Sigilai, A., Karia, B., Karani, A., Voller, S., Agoti, C. N., Ochola-Oyier, L. I., Otiende, M., Bottomley, C., Nyaguara, A., Uyoga, S., Gallagher, K., Kagucia, E. W., Onyango, D., Tsofa, B., Mwangangi, J., Maitha, E., Barasa, E., Bejon, P., Warimwe, G. M., Scott, J. A. G., Agweyu, A.
PLOS Glob Public Health, (2022). 2:e0000883

Sero-surveillance for IgG to SARS-CoV-2 at antenatal care clinics in three Kenyan referral hospitals: Repeated cross-sectional surveys 2020-21.
Lucinde, R. K., Mugo, D., Bottomley, C., Karani, A., Gardiner, E., Aziza, R., Gitonga, J. N., Karanja, H., Nyagwange, J., Tuju, J., Wanjiku, P., Nzomo, E., Kamuri, E., Thuranira, K., Agunda, S., Nyutu, G., Etyang, A. O., Adetifa, I. M. O., Kagucia, E., Uyoga, S., Otiende, M., Otieno, E., Ndwiga, L., Agoti, C. N., Aman, R. A., Mwangangi, M., Amoth, P., Kasera, K., Nyaguara, A., Ng'ang'a, W., Ochola, L. B., Namdala, E., Gaunya, O., Okuku, R., Barasa, E., Bejon, P., Tsofa, B., Ochola-Oyier, L. I., Warimwe, G. M., Agweyu, A., Scott, J. A. G., Gallagher, K. E.
PLoS One, (2022). 17:e0265478

A Scoping Review of Preterm Births in Sub-Saharan Africa: Burden, Risk Factors and Outcomes.
Mabrouk, A., Abubakar, A., Too, E. K., Chongwo, E., Adetifa, I. M.
Int J Environ Res Public Health, (2022). 19:10537

The evolving SARS-CoV-2 epidemic in Africa: Insights from rapidly expanding genomic surveillance.
Tegally, H., San, J. E., Cotten, M., Moir, M., Tegomoh, B., Mboowa, G., Martin, D. P., Baxter, C., Lambisia, A. W., Diallo, A., Amoako, D. G., Diagne, M. M., Sisay, A., Zekri, A. N., Gueye, A. S., Sangare, A. K., Ouedraogo, A. S., Sow, A., Musa, A. O., Sesay, A. K., Abias, A. G., Elzagheid, A. I., Lagare, A., Kemi, A. S., Abar, A. E., Johnson, A. A., Fowotade, A., Oluwapelumi, A. O., Amuri, A. A., Juru, A., Kandeil, A., Mostafa, A., Rebai, A., Sayed, A., Kazeem, A., Balde, A., Christoffels, A., Trotter, A. J., Campbell, A., Keita, A. K., Kone, A., Bouzid, A., Souissi, A., Agweyu, A., Naguib, A., Gutierrez, A. V., Nkeshimana, A., Page, A. J., Yadouleton, A., Vinze, A., Happi, A. N., Chouikha, A., Iranzadeh, A., Maharaj, A., Batchi-Bouyou, A. L., Ismail, A., Sylverken, A. A., Goba, A., Femi, A., Sijuwola, A. E., Marycelin, B., Salako, B. L., Oderinde, B. S., Bolajoko, B., Diarra, B., Herring, B. L., Tsofa, B., Lekana-Douki, B., Mvula, B., Njanpop-Lafourcade, B. M., Marondera, B. T., Khaireh, B. A., Kouriba, B., Adu, B., Pool, B., McInnis, B., Brook, C., Williamson, C., Nduwimana, C., Anscombe, C., Pratt, C. B., Scheepers, C., Akoua-Koffi, C. G., Agoti, C. N., Mapanguy, C. M., Loucoubar, C., Onwuamah, C. K., Ihekweazu, C., Malaka, C. N., Peyrefitte, C., Grace, C., Omoruyi, C. E., Rafai, C. D., Morang'a, C. M., Erameh, C., Lule, D. B., Bridges, D. J., Mukadi-Bamuleka, D., Park, D., Rasmussen, D. A., Baker, D., Nokes, D. J., Ssemwanga, D., Tshiabuila, D., Amuzu, D. S. Y., Goedhals, D., Grant, D. S., Omuoyo, D. O., Maruapula, D., Wanjohi, D. W., Foster-Nyarko, E., Lusamaki, E. K., Simulundu, E., Ong'era, E. M., Ngabana, E. N., Abworo, E. O., Otieno, E., Shumba, E., Barasa, E., Ahmed, E. B., Ahmed, E. A., Lokilo, E., Mukantwari, E., Philomena, E., Belarbi, E., Simon-Loriere, E., Anoh, E. A., Manuel, E., Leendertz, F., Taweh, F. M., Wasfi, F., Abdelmoula, F., Takawira, F. T., Derrar, F., Ajogbasile, F. V., Treurnicht, F., Onikepe, F., Ntoumi, F., Muyembe, F. M., Ragomzingba, F. E. Z., Dratibi, F. A., Iyanu, F. A., Mbunsu, G. K., Thilliez, G., Kay, G. L., Akpede, G. O., van Zyl, G. U., Awandare, G. A., Kpeli, G. S., Schubert, G., Maphalala, G. P., Ranaivoson, H. C., Omunakwe, H. E., Onywera, H., Abe, H., Karray, H., Nansumba, H., Triki, H., Kadjo, H. A. A., Elgahzaly, H., Gumbo, H., Mathieu, H., Kavunga-Membo, H., Smeti, I., Olawoye, I. B., Adetifa, I. M. O., Odia, I., Ben Boubaker, I. B., Mohammad, I. A., Ssewanyana, I., Wurie, I., Konstantinus, I. S., Halatoko, J. W. A., Ayei, J., Sonoo, J., Makangara, J. C., Tamfum, J. M., Heraud, J. M., Shaffer, J. G., Giandhari, J., Musyoki, J., Nkurunziza, J., Uwanibe, J. N., Bhiman, J. N., Yasuda, J., Morais, J., Kiconco, J., Sandi, J. D., Huddleston, J., Odoom, J. K., Morobe, J. M., Gyapong, J. O., Kayiwa, J. T., Okolie, J. C., Xavier, J. S., Gyamfi, J., Wamala, J. F., Bonney, J. H. K., Nyandwi, J., Everatt, J., Nakaseegu, J., Ngoi, J. M., Namulondo, J., Oguzie, J. U., Andeko, J. C., Lutwama, J. J., Mogga, J. J. H., O'Grady, J., Siddle, K. J., Victoir, K., Adeyemi, K. T., Tumedi, K. A., Carvalho, K. S., Mohammed, K. S., Dellagi, K., Musonda, K. G., Duedu, K. O., Fki-Berrajah, L., Singh, L., Kepler, L. M., Biscornet, L., de Oliveira Martins, L., Chabuka, L., Olubayo, L., Ojok, L. D., Deng, L. L., Ochola-Oyier, L. I., Tyers, L., Mine, M., Ramuth, M., Mastouri, M., ElHefnawi, M., Mbanne, M., Matsheka, M. I., Kebabonye, M., Diop, M., Momoh, M., Lima Mendonca, M. D. L., Venter, M., Paye, M. F., Faye, M., Nyaga, M. M., Mareka, M., Damaris, M. M., Mburu, M. W., Mpina, M. G., Owusu, M., Wiley, M. R., Tatfeng, M. Y., Ayekaba, M. O., Abouelhoda, M., Beloufa, M. A., Seadawy, M. G., Khalifa, M. K., Matobo, M. M., Kane, M., Salou, M., Mbulawa, M. B., Mwenda, M., Allam, M., Phan, M. V. T., Abid, N., Rujeni, N., Abuzaid, N., Ismael, N., Elguindy, N., Top, N. M., Dia, N., Mabunda, N., Hsiao, N. Y., Silochi, N. B., Francisco, N. M., Saasa, N., Bbosa, N., Murunga, N., Gumede, N., Wolter, N., Sitharam, N., Ndodo, N., Ajayi, N. A., Tordo, N., Mbhele, N., Razanajatovo, N. H., Iguosadolo, N., Mba, N., Kingsley, O. C., Sylvanus, O., Femi, O., Adewumi, O. M., Testimony, O., Ogunsanya, O. A., Fakayode, O., Ogah, O. E., Oludayo, O. E., Faye, O., Smith-Lawrence, P., Ondoa, P., Combe, P., Nabisubi, P., Semanda, P., Oluniyi, P. E., Arnaldo, P., Quashie, P. K., Okokhere, P. O., Bejon, P., Dussart, P., Bester, P. A., Mbala, P. K., Kaleebu, P., Abechi, P., El-Shesheny, R., Joseph, R., Aziz, R. K., Essomba, R. G., Ayivor-Djanie, R., Njouom, R., Phillips, R. O., Gorman, R., Kingsley, R. A., Neto Rodrigues, R. M. D. E. S. A., Audu, R. A., Carr, R. A. A., Gargouri, S., Masmoudi, S., Bootsma, S., Sankhe, S., Mohamed, S. I., Femi, S., Mhalla, S., Hosch, S., Kassim, S. K., Metha, S., Trabelsi, S., Agwa, S. H., Mwangi, S. W., Doumbia, S., Makiala-Mandanda, S., Aryeetey, S., Ahmed, S. S., Ahmed, S. M., Elhamoumi, S., Moyo, S., Lutucuta, S., Gaseitsiwe, S., Jalloh, S., Andriamandimby, S. F., Oguntope, S., Grayo, S., Lekana-Douki, S., Prosolek, S., Ouangraoua, S., van Wyk, S., Schaffner, S. F., Kanyerezi, S., Ahuka-Mundeke, S., Rudder, S., Pillay, S., Nabadda, S., Behillil, S., Budiaki, S. L., van der Werf, S., Mashe, T., Mohale, T., Le-Viet, T., Velavan, T. P., Schindler, T., Maponga, T. G., Bedford, T., Anyaneji, U. J., Chinedu, U., Ramphal, U., George, U. E., Enouf, V., Nene, V., Gorova, V., Roshdy, W. H., Karim, W. A., Ampofo, W. K., Preiser, W., Choga, W. T., Ahmed, Y. A., Ramphal, Y., Bediako, Y., Naidoo, Y., Butera, Y., de Laurent, Z. R., Africa Pathogen Genomics, Initiative., Ouma, A. E. O., von Gottberg, A., Githinji, G., Moeti, M., Tomori, O., Sabeti, P. C., Sall, A. A., Oyola, S. O., Tebeje, Y. K., Tessema, S. K., de Oliveira, T., Happi, C., Lessells, R., Nkengasong, J., Wilkinson, E.
Science, (2022). :eabq5358