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Viral Infections and Outbreaks Research · Journal article
Global Health Cases · September 2, 2026
Early or partial results. Treat as a signal, not a conclusion.
This is a descriptive epidemiological case study linking recurrent cholera outbreaks in Lusaka, Zambia to structural determinants (inadequate WASH, weak drainage, climate-driven flooding) and health system constraints. The work documents response measures (vaccination, surveillance, clinical management) and barriers (reactive financing, laboratory capacity, vaccine supply, community mistrust) but does not quantify outbreak size, intervention effectiveness, or compare outcomes between response strategies.
Descriptive case study. Low-income urban and peri-urban populations in Lusaka Province, Zambia during 2017–2018 and 2023–2024 cholera outbreaks. Lusaka Province and informal settlements, Zambia.
Cholera disproportionately affects low-income urban and peri-urban populations, particularly in Lusaka Province Recurrent clustering of cases in the same peri-urban neighbourhoods of Lusaka over time proves exposure pathways remain largely unchanged between outbreaks Seasonal flooding during rainy season increases exposure by inundating sanitation facilities and contaminating shallow groundwater
No quantified outbreak size, case counts, mortality, or morbidity figures are reported
This case study identifies structural and systemic factors underlying cholera vulnerability and response gaps in resource-constrained settings. Clinicians and public health professionals should recognise cholera as a predictable outcome of specific environmental and governance failures rather than an unpredictable emergency, and use these findings to advocate for upstream WASH investment and community engagement rather than relying on reactive clinical and vaccination measures alone.
This is a descriptive case study of cholera epidemiology and response measures in Zambia without a comparator, control group, or quantified intervention outcomes, presenting observational analysis rather than hypothesis testing.
As stated by the source record.
This case study identifies structural and systemic factors underlying cholera vulnerability and response gaps in resource-constrained settings. Clinicians and public health professionals should recognise cholera as a predictable outcome of specific environmental and governance failures rather than an unpredictable emergency, and use these findings to advocate for upstream WASH investment and community engagement rather than relying on reactive clinical and vaccination measures alone.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
What is missing. This record has no reported figures. That is a gap in the analysis, not a judgement about the study.
Abstract Cholera remains a recurrent public health challenge in Zambia, with repeated outbreaks disproportionately affecting low-income urban and peri-urban populations, particularly in Lusaka Province. Seasonal rainfall and flooding intensified by climate change repeatedly overwhelm sanitation systems and contaminate water sources. This is particularly true where pit latrines and shallow wells coexist in Lusaka and other flood-prone areas. This case study summarizes the epidemiology and factors associated with cholera transmission using the 2017–2018 and 2023–2024 outbreaks as focal points. It links the disease to structural determinants including inadequate water, sanitation, and hygiene (WASH) services, weak drainage infrastructure, health system constraints, and governance challenges. The seasonal flooding during the rainy season increases exposure by inundating sanitation facilities and contaminating shallow groundwater and alternative water sources in informal settlements, creating conditions that support repeated transmission cycles. The recurrent clustering of cases in the same peri-urban neighbourhoods of Lusaka over time proves that exposure pathways remain largely unchanged between outbreaks. This shows cholera as a predictable outcome of environmental and social conditions. This case recounts response measures across primary, secondary, and tertiary prevention, which include WASH services, oral cholera vaccination, surveillance and laboratory confirmation, risk communication, and clinical management through rehydration therapy and antibiotics. It also identifies barriers to prevention, including reactive financing, infrastructure deficits, limited laboratory capacity, vaccine supply constraints, and community mistrust shaped by prior emergency responses. The case situates cholera risk as the intersection of climate hazards, urban development, environmental infrastructure, and social inequities, illustrating the importance of governance, equity, and community trust in shaping cholera prevention and response. Information © The Authors 2026
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