ArticlePloS one2021
Epidemiology of measles cases, vaccine effectiveness, and performance towards measles elimination in The Gambia.
Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.
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Who cites it
10 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Measles vaccine effectiveness in African children: a systematic review and meta-analysis.BMC infectious diseases · 2024Pooled it
- Real-world effectiveness of measles vaccine and associated factors among children aged 9-59 months during epidemic resurgence in the Democratic Republic of Congo: a nationwide test-negative case-control study.Tropical diseases, travel medicine and vaccines · 2026Article
- The measles vaccine's effectiveness during an epidemic: a test negative case control study (Tunisia, 2019).BMC infectious diseases · 2026Article
- Epidemiological characteristics of measles in children in Togo from 2020 to 2024: a cross-sectional study.BMC pediatrics · 2026Article
- Serological survey to determine measles and rubella immunity gaps across age and geographic locations in The Gambia: a study protocol.Global health action · 2025Article
- Spatial analysis of measles cases and vaccination coverage in the Somali region, eastern Ethiopia.Frontiers in epidemiology · 2025Article
- Starting then stopping: a nationwide register-based study on the magnitude, predictors, and urban-rural patterns of under-vaccination variation across health centers in The Gambia.Global health action · 2024Article
- Article
- Epidemiology of confirmed measles virus cases, surveillance, incidence, and associated factors in Eritrea: 18-year retrospective analysis.Frontiers in public health · 2023Article
- Article
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13 authors.
Funding
Abstract
introductionIn 2011, member states of the World Health Organization (WHO) Africa Regional Office (AFRO) resolved to eliminate Measles by 2020. Our study aims to assess The Gambia's progress towards the set AFRO measles elimination target and highlight surveillance and immunisation gaps to better inform future measles prevention strategies. MATERIAL AND
methodsA retrospective review of measles surveillance data for the period 2011-2019, was extracted from The Gambia case-based measles surveillance database. WHO-UNICEF national coverage estimates were used for estimating national level MCV coverage. Measles post campaign coverage survey coverage estimates were used to estimate national measles campaign coverage.
resultsOne hundred and twenty-five of the 863 reported suspected cases were laboratory confirmed as measles cases. More than half (53.6%) of the confirmed cases have unknown vaccination status, 24% of cases were vaccinated, 52.8% of cases occurred among males, and 72.8% cases were among urban residents. The incidence of measles cases per million population was lowest (0) in 2011-2012 and highest in 2015 and 2016 (31 and 23 respectively). The indicator for surveillance sensitivity was met in all years except in 2016 and 2019. Children aged 5-9 years (Incidence Rate Ratio-IRR = 0.6) and residents of Central River region (IRR = 0.21) had lower measles risk whilst unvaccinated (Adjusted IRR = 5.95) and those with unknown vaccination status (IRR 2.21) had higher measles risk. Vaccine effectiveness was 89.5%.
conclusionThe Gambia's quest to attain measles elimination status by 2020 has registered significant success but it is unlikely that all target indicators will be met. Vaccination has been very effective in preventing cases. There is variation in measles risk by health region, and it will be important to take it into account when designing prevention and control strategies. The quality of case investigations should be improved to enhance the quality of surveillance for decision making.
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