Accueil › Annuaire des chercheurs › John Ojal
John Ojal
Affiliation : Kenya Medical Research Institute · KEMRI-Wellcome Trust Research Programme
- 32Publications (affiliation kényane)
Profil de recherche
John Ojal compte 32 publications référencées (2011–2025). Ses travaux paraissent principalement dans « Vaccine », « BMC Medicine » et « The Lancet Global Health ». Son article le plus cité, « Profile: The Kilifi Health and Demographic Surveillance System (KHDSS) » (2012), a été cité 367 fois. 4 de ces publications datent des trois dernières années d’activité. Ses travaux sont cosignés avec au moins 12 chercheurs, notamment dans des établissements de Royaume-Uni, Ghana, Nigeria, États-Unis.
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- 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
- A qualitative inquiry on drivers of COVID-19 vaccine hesitancy among adults in Kenya
- The impact of introduction of the 10-valent pneumococcal conjugate vaccine on pneumococcal carriage in Nigeria
- Non-O ABO blood group genotypes differ in their associations with Plasmodium falciparum rosetting and severe malaria
- Epidemiological impact and cost-effectiveness analysis of COVID-19 vaccination in Kenya
- Social mixing patterns relevant to infectious diseases spread by close contact in urban Blantyre, Malawi
- Revealing the extent of the first wave of the COVID-19 pandemic in Kenya based on serological and PCR-test data
- Examining the unit costs of COVID-19 vaccine delivery in Kenya
- The cost of illness for childhood clinical pneumonia and invasive pneumococcal disease in Nigeria
- A computational framework for modelling infectious disease policy based on age and household structure with applications to the COVID-19 pandemic
- COVID-19 transmission dynamics underlying epidemic waves in Kenya
- The importance of supplementary immunisation activities to prevent measles outbreaks during the COVID-19 pandemic in Kenya
- Revealing the extent of the first wave of the COVID-19 pandemic in Kenya based on serological and PCR-test data
- Estimating the contribution of HIV-infected adults to household pneumococcal transmission in South Africa, 2016–2018: A hidden Markov modelling study
- Effect of ten-valent pneumococcal conjugate vaccine on invasive pneumococcal disease and nasopharyngeal carriage in Kenya: a longitudinal surveillance study
- The epidemiology of sickle cell disease in children recruited in infancy in Kilifi, Kenya: a prospective cohort study
- Sustaining pneumococcal vaccination after transitioning from Gavi support: a modelling and cost-effectiveness study in Kenya
- Human candidate gene polymorphisms and risk of severe malaria in children in Kilifi, Kenya: a case-control association study
- The clinical epidemiology of sickle cell anemia In A frica
- Strong Gradients in Forest Sensitivity to Climate Change Revealed by Dynamics of Forest Fire Cycles in the Post Little Ice Age Era
- 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
- 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
- Pneumococcal conjugate vaccine induced IgG and nasopharyngeal carriage of pneumococci: Hyporesponsiveness and immune correlates of protection for carriage
- Under-five mortality rate variation between the Health and Demographic Surveillance System (HDSS) and Demographic and Health Survey (DHS) approaches
- Multiple clinical episodes of Plasmodium falciparum malaria in a low transmission intensity setting: exposure versus immunity
- 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
- 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
- Profile: The Kilifi Health and Demographic Surveillance System (KHDSS)
- Rates of Acquisition of Pneumococcal Colonization and Transmission Probabilities, by Serotype, Among Newborn Infants in Kilifi District, Kenya
- Excess child mortality after discharge from hospital in Kilifi, Kenya: a retrospective cohort analysis
- Pneumococcal Conjugate Vaccine Given Shortly After Birth Stimulates Effective Antibody Concentrations and Primes Immunological Memory for Sustained Infant Protection
- Acute seizures attributable to falciparum malaria in an endemic area on the Kenyan coast
Revues de publication
- Vaccine × 3
- BMC Medicine × 3
- The Lancet Global Health × 3
- BMJ Global Health × 2
- Wellcome Open Research × 2
- PLoS Computational Biology × 2
Publications par année
- 20251
- 20241
- 20232
- 20226
- 20214
- 20193
- 20181
- 20175
- 20161
- 20151
Collaborations
Établissements partenaires : University of Oxford · Wellcome Trust · London School of Hygiene & Tropical Medicine · Ministry of Health · Government of Kenya
Pays des co-auteurs : Royaume-Uni · Ghana · Nigeria · États-Unis
Co-auteurs
- J. Anthony G. Scott
- Ifedayo Adetifa
- Benjamin Tsofa
- Sophie M. Uyoga
- Thomas Neil Williams
- D. James Nokes
- Donald O. Akech
- Kevin Marsh
- Neema Mturi
- Edwine Barasa
- Norbert M. Peshu
- Mark Otiende
Données bibliographiques issues d’OpenAlex (base ouverte).
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