John Ojal

Dados Biográficos

ID7785525
NOMEJohn Ojal
PRENOMESJohn
SOBRENOMEOjal
ASSINATURAOJAL J
AFILIAÇÕESKenya Medical Research Institute
ORCID0000-0002-3010-1158
VERIFICADOSim
TOTAL DE OBRAS6
TOTAL DE CITAÇÕES0
TOTAL COMO AUTOR6
TOTAL COMO EDITOR0
PRIMEIRO ANO DE PUBLICAÇÃO2014
ANO MAIS RECENTE DE PUBLICAÇÃO2026
ÍNDICE H0

  • Bridging the gap between public health, academia and policy

    Open AccessPaula Christen, Jeanette Dawa et al.ARTICLEBMJ Global Health2026

    The use of advanced analytics in public health policy remains hindered by a disconnect between researchers, policymakers and technical experts. Bridging this gap requires intentional knowledge translation strategies that facilitate interdisciplinary collaboration and real-world application of research findings. Hackathons, which bring together diverse stakeholders in a time-bound, solution-oriented format, offer an approach to address this challe…

  • A qualitative inquiry on drivers of Covid-19 vaccine hesitancy among adults in Kenya

    Open AccessStacey Orangi, Daniel Mbuthia et al.ARTICLEPLOS Global Public Health2024

    COVID-19 vaccination rates have been low among adults in Kenya (36.7% as of late March 2023) with vaccine hesitancy posing a threat to the COVID-19 vaccination program. This study sought to examine facilitators and barriers to COVID-19 vaccinations in Kenya. We conducted a qualitative cross-sectional study in two purposively selected counties in Kenya. We collected data through 8 focus group discussions with 80 community members and 8 in-depth in…

  • The cost of illness for childhood clinical pneumonia and invasive pneumococcal disease in Nigeria

    Open AccessAishatu L Adamu, Boniface Karia et al.ARTICLEBMJ Global Health2022

    BACKGROUND: Pneumococcal disease contributes significantly to childhood morbidity and mortality and treatment is costly. Nigeria recently introduced the pneumococcal conjugate vaccine (PCV) to prevent pneumococcal disease. The aim of this study is to estimate health provider and household costs for the treatment of pneumococcal disease in children aged <5 years (U5s), and to assess the impact of these costs on household income. METHODS: We recrui…

  • Epidemiological impact and cost-effectiveness analysis of Covid-19 vaccination in Kenya

    Open AccessStacey Orangi, John Ojal et al.ARTICLEBMJ Global Health2022

    BACKGROUND: A few studies have assessed the epidemiological impact and the cost-effectiveness of COVID-19 vaccines in settings where most of the population had been exposed to SARS-CoV-2 infection. METHODS: We conducted a cost-effectiveness analysis of COVID-19 vaccine in Kenya from a societal perspective over a 1.5-year time frame. An age-structured transmission model assumed at least 80% of the population to have prior natural immunity when an …

  • Under-five mortality rate variation between the Health and Demographic Surveillance System (HDSS) and Demographic and Health Survey (DHS) approaches

    Open AccessAmare Deribew, John Ojal et al.ARTICLEBMC Public Health2016

    The inconsistency between HDSS and DHS approaches could have global implication on the estimation of child mortality and ethical issues on mortality inequalities. Further studies should be conducted to investigate the reasons of child mortality variation between the HDSS and the DHS approaches

  • The INDEPTH standard population for low- and middle-income countries, 2013

    Open AccessOsman Sankoh, David Sharrow et al.ARTICLEGlobal Health Action2014

    Crude rates such as the crude death rate are functions of both the age-specific rates and the age composition of a population. However, differences in the age structure between two populations or two time periods can result in specious differences in the corresponding crude rates making direct comparisons between populations or across time inappropriate. Therefore, when comparing crude rates between populations, it is desirable to eliminate or mi…