Did water and hygiene help stop the cholera outbreak in Zimbabwe?

The 2018 cholera outbreak in Zimbabwe highlighted the critical role of community-wide water, sanitation, and hygiene (WASH) interventions. These measures, combined with vaccination and outbreak detection, were essential in reducing the impact of the disease. While specific numbers for Zimbabwe are not provided in the available data, similar studies in neighboring regions show that WASH is a foundational control strategy.

What the research says

A field report on the 2018 Zimbabwe outbreak explicitly states that community-wide water, sanitation, and hygiene interventions were vital for reducing cholera's impact. The report emphasizes that these efforts worked alongside vaccination and detection systems to control the spread of the disease ².

Research from neighboring Zambia supports this approach. During outbreaks in Zambia, the Ministry of Health used cholera vaccination in addition to other preventative measures to stop the spread. These other measures inherently include water and hygiene improvements, which are standard public health responses to cholera ⁴.

Global health guidelines reinforce that oral cholera vaccination is recommended as a public health response alongside water, sanitation, and hygiene interventions. Studies in Malawi found that when WASH exposure was accounted for, it helped clarify the effectiveness of vaccines, showing that both strategies work together to reduce transmission ¹.

What to ask your doctor

• What specific water and hygiene improvements are recommended for my household to prevent cholera?
• How effective are WASH interventions compared to vaccination in my local area?
• What signs should I look for to detect a potential cholera outbreak in my community?
• Are there specific hygiene practices I should follow if I live near a water source known for cholera risks?