ArticleThe Journal of infectious diseases2018
The Epidemiology of Cholera in Zanzibar: Implications for the Zanzibar Comprehensive Cholera Elimination Plan.
Article in The Journal of infectious diseases, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 16 citations in OpenAlex.
- Estimating time-varying cholera transmission and oral cholera vaccine effectiveness in Haiti and Cameroon, 2021-2023.BMJ open · 2026Article
- Real-time analytical insights for disease surveillance and response during the severe drought and food security crisis, Somalia 2022-2023.Conflict and health · 2026Article
- Geographical shifting of cholera burden in Africa and its implications for disease control.Nature medicine · 2025Article
- Towards cholera elimination in Zanzibar: analysis of evidences on what have worked.The Pan African medical journal · 2023Article
- Cholera outbreaks in sub-Saharan Africa during 2010-2019: a descriptive analysis.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2022Article
- The seasonality of cholera in sub-Saharan Africa: a statistical modelling study.The Lancet. Global health · 2022Article
- Impact of preventive chemotherapy on transmission of soil-transmitted helminth infections in Pemba Island, United Republic of Tanzania, 1994-2021.PLoS neglected tropical diseases · 2022Article
- Contrasting Epidemiology of Cholera in Bangladesh and Africa.The Journal of infectious diseases · 2021Review
- Cholera hotspots and surveillance constraints contributing to recurrent epidemics in Tanzania.BMC research notes · 2019Article
Corrections and comments
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Authors and funding
15 authors at 7 institutions in 6 countries.
Funding
Abstract
Background: Cholera poses a public health and economic threat to Zanzibar. Detailed epidemiologic analyses are needed to inform a multisectoral cholera elimination plan currently under development. Methods: We collated passive surveillance data from 1997 to 2017 and calculated the outbreak-specific and cumulative incidence of suspected cholera per shehia (neighborhood). We explored the variability in shehia-specific relative cholera risk and explored the predictive power of targeting intervention at shehias based on historical incidence. Using flexible regression models, we estimated cholera's seasonality and the relationship between rainfall and cholera transmission. Results: From 1997 and 2017, 11921 suspected cholera cases were reported across 87% of Zanzibar's shehias, representing an average incidence rate of 4.4 per 10000/year. The geographic distribution of cases across outbreaks was variable, although a number of high-burden areas were identified. Outbreaks were highly seasonal with 2 high-risk periods corresponding to the annual rainy seasons. Conclusions: Shehia-targeted interventions should be complemented with island-wide cholera prevention activities given the spatial variability in cholera risk from outbreak to outbreak. In-depth risk factor analyses should be conducted in the high-burden shehias. The seasonal nature of cholera provides annual windows of opportunity for cholera preparedness activities.
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