What intervention stopped the cholera outbreak according to the material?

• A. Vaccination campaign
• B. Quarantine travelers
• C. Cutting off access to the well
• D. Treating with antibiotics

Answer: (C)

Cholera spreads through contaminated water, so stopping transmission often means removing the exposure source. When a shared water source is identified as the outbreak’s major exposure, cutting off access to that source eliminates the primary way people become infected. This quickly reduces new cases and can bring the outbreak to an end, which is why removing access to the well is the most effective intervention in this scenario.

Vaccination can reduce susceptibility but doesn’t immediately stop ongoing transmission from existing exposure. Quarantining travelers and antibiotics help individual cases, but they don’t address the root pathway driving the outbreak in the community.