Brand, Samuel PC; Ojal, John; Aziza, Rabia; Were, Vincent; Okiro, Emelda A; Kombe, Ivy K; Mburu, Caroline; Ogero, Morris; Agweyu, Ambrose; Warimwe, George M; +23 more... Nyagwange, James; Karanja, Henry; Gitonga, John N; Mugo, Daisy; Uyoga, Sophie; Adetifa, Ifedayo MO; Scott, J Anthony G; Otieno, Edward; Murunga, Nickson; Otiende, Mark; Ochola-Oyier, Lynette I; Agoti, Charles N; Githinji, George; Kasera, Kadondi; Amoth, Patrick; Mwangangi, Mercy; Aman, Rashid; Ng'ang'a, Wangari; Tsofa, Benjamin; Bejon, Philip; Keeling, Matt J; Nokes, D James; Barasa, Edwine; (2021) COVID-19 transmission dynamics underlying epidemic waves in Kenya. Science (New York, N.Y.), 374 (6570). pp. 989-994. ISSN 0036-8075 DOI: https://doi.org/10.1126/science.abk0414

Deribew, Amare; Ojal, John; Karia, Boniface; Bauni, Evasius; Oteinde, Mark; (2016) Under-five mortality rate variation between the Health and Demographic Surveillance System (HDSS) and Demographic and Health Survey (DHS) approaches. BMC public health, 16 (1). 1118-. ISSN 1471-2458 DOI: https://doi.org/10.1186/s12889-016-3786-2

Etyang, Anthony O; Munge, Kenneth; Bunyasi, Erick W; Matata, Lena; Ndila, Carolyne; Kapesa, Sailoki; Owiti, Maureen; Khandwalla, Iqbal; Brent, Andrew J; Tsofa, Benjamin; +11 more... Kabibu, Pamela; Morpeth, Susan; Bauni, Evasius; Otiende, Mark; Ojal, John; Ayieko, Philip; Knoll, Maria D; Smeeth, Liam; Williams, Thomas N; Griffiths, Ulla K; Scott, J Anthony G; (2014) Burden of disease in adults admitted to hospital in a rural region of coastal Kenya: an analysis of data from linked clinical and demographic surveillance systems. The Lancet Global health, 2 (4). e216-e224. ISSN 2214-109X DOI: https://doi.org/10.1016/S2214-109X(14)70023-3

Flasche, Stefan; Lipsitch, Marc; Ojal, John; Pinsent, Amy; (2020) Estimating the contribution of different age strata to vaccine serotype pneumococcal transmission in the pre vaccine era: a modelling study. BMC medicine, 18 (1). 129-. ISSN 1741-7015 DOI: https://doi.org/10.1186/s12916-020-01601-1

Flasche, Stefan; Ojal, John; Le Polain de Waroux, Olivier; Otiende, Mark; O'Brien, Katherine L; Kiti, Moses; Nokes, D James; Edmunds, W John; Scott, J Anthony G; (2017) Assessing the efficiency of catch-up campaigns for the introduction of pneumococcal conjugate vaccine: a modelling study based on data from PCV10 introduction in Kilifi, Kenya. BMC medicine, 15 (1). 113-. ISSN 1741-7015 DOI: https://doi.org/10.1186/s12916-017-0882-9

Hammitt, Laura L; Etyang, Anthony O; Morpeth, Susan C; Ojal, John; Mutuku, Alex; Mturi, Neema; Moisi, Jennifer C; Adetifa, Ifedayo M; Karani, Angela; Akech, Donald O; +14 more... Otiende, Mark; Bwanaali, Tahreni; Wafula, Jackline; Mataza, Christine; Mumbo, Edward; Tabu, Collins; Knoll, Maria Deloria; Bauni, Evasius; Marsh, Kevin; Williams, Thomas N; Kamau, Tatu; Sharif, Shahnaaz K; Levine, Orin S; Scott, J Anthony G; (2019) Effect of ten-valent pneumococcal conjugate vaccine on invasive pneumococcal disease and nasopharyngeal carriage in Kenya: a longitudinal surveillance study. Lancet, 393 (10186). pp. 2146-2154. ISSN 0140-6736 DOI: https://doi.org/10.1016/S0140-6736(18)33005-8

Hammitt, Laura L; Ojal, John; Bashraheil, Mahfudh; Morpeth, Susan C; Karani, Angela; Habib, Ahsan; Borys, Dorota; Goldblatt, David; Scott, J Anthony G; (2014) Immunogenicity, impact on carriage and reactogenicity of 10-valent pneumococcal non-typeable Haemophilus influenzae protein D conjugate vaccine in Kenyan children aged 1-4 years: a randomized controlled trial. PloS one, 9 (1). e85459-. ISSN 1932-6203 DOI: https://doi.org/10.1371/journal.pone.0085459

Kariuki, Symon M; Ikumi, Michelle; Ojal, John; Sadarangani, Manish; Idro, Richard; Olotu, Ally; Bejon, Philip; Berkley, James A; Marsh, Kevin; Newton, Charles RJC; (2011) Acute seizures attributable to falciparum malaria in an endemic area on the Kenyan coast. Brain, 134 (Pt 5). pp. 1519-1528. ISSN 0006-8950 DOI: https://doi.org/10.1093/brain/awr051

Macharia, Alex W; Mochamah, George; Uyoga, Sophie; Ndila, Carolyne M; Nyutu, Gideon; Makale, Johnstone; Tendwa, Metrine; Nyatichi, Emily; Ojal, John; Shebe, Mohammed; +7 more... Awuondo, Kennedy O; Mturi, Neema; Peshu, Norbert; Tsofa, Benjamin; Scott, J Anthony G; Maitland, Kathryn; Williams, Thomas N; (2017) The clinical epidemiology of sickle cell anemia In Africa. American journal of hematology, 93 (3). pp. 363-370. ISSN 0361-8609 DOI: https://doi.org/10.1002/ajh.24986

Mburu, CN; Ojal, J; Chebet, R; Akech, D; Karia, B; Tuju, J; Sigilai, A; Abbas, K; Jit, M; Funk, S; +9 more... Smits, G; van Gageldonk, PGM; van der Klis, FRM; Tabu, C; Nokes, DJ; LSHTM CMMID COVID-19 Working Group; Scott, Jag; Flasche, S; Adetifa, Imo; (2021) The importance of supplementary immunisation activities to prevent measles outbreaks during the COVID-19 pandemic in Kenya. BMC medicine, 19 (1). 35-. ISSN 1741-7015 DOI: https://doi.org/10.1186/s12916-021-01906-9

Moïsi, Jennifer C; Gatakaa, Hellen; Berkley, James A; Maitland, Kathryn; Mturi, Neema; Newton, Charles R; Njuguna, Patricia; Nokes, James; Ojal, John; Bauni, Evasius; +5 more... Tsofa, Benjamin; Peshu, Norbert; Marsh, Kevin; Williams, Thomas N; Scott, J Anthony G; (2011) Excess child mortality after discharge from hospital in Kilifi, Kenya: a retrospective cohort analysis. Bulletin of the World Health Organization, 89 (10). 725-732A. ISSN 0042-9686 DOI: https://doi.org/10.2471/BLT.11.089235

Ndila, Carolyne M; Uyoga, Sophie; Macharia, Alexander W; Nyutu, Gideon; Peshu, Norbert; Ojal, John; Shebe, Mohammed; Awuondo, Kennedy O; Mturi, Neema; Tsofa, Benjamin; +15 more... Sepúlveda, Nuno; Clark, Taane G; Band, Gavin; Clarke, Geraldine; Rowlands, Kate; Hubbart, Christina; Jeffreys, Anna; Kariuki, Silvia; Marsh, Kevin; Mackinnon, Margaret; Maitland, Kathryn; Kwiatkowski, Dominic P; Rockett, Kirk A; Williams, Thomas N; MalariaGEN Consortium; (2018) Human candidate gene polymorphisms and risk of severe malaria in children in Kilifi, Kenya: a case-control association study. The Lancet Haematology, 5 (8). e333-e345. ISSN 2352-3026 DOI: https://doi.org/10.1016/S2352-3026(18)30107-8

Ojal, John; Brand, Samuel PC; Were, Vincent; Okiro, Emelda A; Kombe, Ivy K; Mburu, Caroline; Aziza, Rabia; Ogero, Morris; Agweyu, Ambrose; Warimwe, George M; +16 more... Uyoga, Sophie; Adetifa, Ifedayo MO; Scott, J Anthony G; Otieno, Edward; Ochola-Oyier, Lynette I; Agoti, Charles N; Kasera, Kadondi; Amoth, Patrick; Mwangangi, Mercy; Aman, Rashid; Ng’ang’a, Wangari; Tsofa, Benjamin; Bejon, Philip; Barasa, Edwine; Keeling, Matt J; Nokes, D James; (2020) Revealing the extent of the COVID-19 pandemic in Kenya based on serological and PCR-test data. medrxiv. DOI: https://doi.org/10.1101/2020.09.02.20186817 (Submitted)

Ojal, John; Flasche, Stefan; Hammitt, Laura L; Akech, Donald; Kiti, Moses C; Kamau, Tatu; Adetifa, Ifedayo; Nurhonen, Markku; Scott, J Anthony G; Auranen, Kari; (2017) Sustained reduction in vaccine-type invasive pneumococcal disease despite waning effects of a catch-up campaign in Kilifi, Kenya: A mathematical model based on pre-vaccination data. Vaccine, 35 (35 Pt). pp. 4561-4568. ISSN 0264-410X DOI: https://doi.org/10.1016/j.vaccine.2017.07.019

Ojal, John; Goldblatt, David; Tigoi, Caroline; Scott, J Anthony G; (2017) Effect of Maternally Derived Anti-protein and Anticapsular IgG Antibodies on the Rate of Acquisition of Nasopharyngeal Carriage of Pneumococcus in Newborns. Clinical infectious diseases, 66 (1). pp. 121-130. ISSN 1058-4838 DOI: https://doi.org/10.1093/cid/cix742

Ojal, John; Griffiths, Ulla; Hammitt, Laura L; Adetifa, Ifedayo; Akech, Donald; Tabu, Collins; Scott, J Anthony G; Flasche, Stefan; (2019) Sustaining pneumococcal vaccination after transitioning from Gavi support: a modelling and cost-effectiveness study in Kenya. Lancet Global Health, 7 (5). e644-e654. ISSN 2214-109X DOI: https://doi.org/10.1016/S2214-109X(18)30562-X

Ojal, John; Griffiths, Ulla; Hammitt, Laura L; Adetifa, Ifedayo; Akech, Donald; Tabu, Collins; Scott, J Anthony G; Flasche, Stefan; (2019) Sustaining pneumococcal vaccination after transitioning from Gavi support: a modelling and cost-effectiveness study in Kenya. The Lancet Global Health, 7 (5). e644-e654. ISSN 2214-109X DOI: https://doi.org/10.1016/S2214-109X(18)30562-X

Ojal, John; Hammitt, Laura L; Gaitho, John; Scott, J Anthony G; Goldblatt, David; (2017) Pneumococcal conjugate vaccine induced IgG and nasopharyngeal carriage of pneumococci: Hyporesponsiveness and immune correlates of protection for carriage. Vaccine, 35 (35 Pt). pp. 4652-4657. ISSN 0264-410X DOI: https://doi.org/10.1016/j.vaccine.2017.05.088

Sankoh, Osman; Sharrow, David; Herbst, Kobus; Whiteson Kabudula, Chodziwadziwa; Alam, Nurul; Kant, Shashi; Ravn, Henrik; Bhuiya, Abbas; Thi Vui, Le; Darikwa, Timotheus; +24 more... Gyapong, Margaret; Jasseh, Momodou; Chuc Thi Kim, Nguyen; Abdullah, Salim; Crampin, Amelia; Ojal, John; Owusu-Agyei, Seth; Odhiambo, Frank; Urassa, Mark; Streatfield, Kim; Shimada, Masaaki; Sacoor, Charfudin; Beguy, Donatien; Derra, Karim; Wak, George; Delaunay, Valerie; Sie, Ali; Soura, Abdramane; Diallo, Diadier; Wilopo, Siswanto; Masanja, Honorati; Bonfoh, Bassirou; Phuanukoonnon, Suparat; Clark, Samuel J; (2014) The INDEPTH standard population for low- and middle-income countries, 2013. Global health action, 7 (1). 23286-. ISSN 1654-9716 DOI: https://doi.org/10.3402/gha.v7.23286

Scott, J Anthony G; Bauni, Evasius; Moisi, Jennifer C; Ojal, John; Gatakaa, Hellen; Nyundo, Christopher; Molyneux, Catherine S; Kombe, Francis; Tsofa, Benjamin; Marsh, Kevin; +2 more... Peshu, Norbert; Williams, Thomas N; (2012) Profile: The Kilifi Health and Demographic Surveillance System (KHDSS). International journal of epidemiology, 41 (3). pp. 650-657. ISSN 0300-5771 DOI: https://doi.org/10.1093/ije/dys062

Scott, J Anthony G; Ojal, John; Ashton, Lindsey; Muhoro, Anne; Burbidge, Polly; Goldblatt, David; (2011) Pneumococcal conjugate vaccine given shortly after birth stimulates effective antibody concentrations and primes immunological memory for sustained infant protection. Clinical infectious diseases, 53 (7). pp. 663-670. ISSN 1058-4838 DOI: https://doi.org/10.1093/cid/cir444

Thindwa, Deus; Pinsent, Amy; Ojal, John; Gallagher, Katherine E; French, Neil; Flasche, Stefan; (2020) Vaccine strategies to reduce the burden of pneumococcal disease in HIV-infected adults in Africa. EXPERT REVIEW OF VACCINES, 19 (11). pp. 1085-1092. ISSN 1476-0584 DOI: https://doi.org/10.1080/14760584.2020.1843435

Tigoi, Caroline C; Gatakaa, Hellen; Karani, Angela; Mugo, Daisy; Kungu, Stella; Wanjiru, Eva; Jomo, Jane; Musyimi, Robert; Ojal, John; Glass, Nina E; +2 more... Abdullahi, Osman; Scott, J Anthony G; (2012) Rates of acquisition of pneumococcal colonization and transmission probabilities, by serotype, among newborn infants in Kilifi District, Kenya. Clinical infectious diseases, 55 (2). pp. 180-188. ISSN 1058-4838 DOI: https://doi.org/10.1093/cid/cis371

Uyoga, Sophie; Macharia, Alex W; Mochamah, George; Ndila, Carolyne M; Nyutu, Gideon; Makale, Johnstone; Tendwa, Metrine; Nyatichi, Emily; Ojal, John; Otiende, Mark; +8 more... Shebe, Mohammed; Awuondo, Kennedy O; Mturi, Neema; Peshu, Norbert; Tsofa, Benjamin; Maitland, Kathryn; Scott, J Anthony G; Williams, Thomas N; (2019) The epidemiology of sickle cell disease in children recruited in infancy in Kilifi, Kenya: a prospective cohort study. Lancet Global Health, 7 (10). e1458-e1466. ISSN 2214-109X DOI: https://doi.org/10.1016/S2214-109X(19)30328-6