In preventing diarrheal diseases in detainee camps, which intervention is emphasized as the most effective?

• A. Building of latrines
• B. Provision of safe water in sufficient quantity
• C. Distribution of soap
• D. Appropriate site planning to avoid overcrowding

Answer: (B)

Diarrheal disease is driven largely by fecal-oral transmission, and having an ample, safe water supply is the most effective way to interrupt many pathways of this transmission in detainee camps. Water is essential not only for drinking but also for cooking, hydration during illness, hygiene, and cleaning surfaces and latrines. When water is scarce or unsafe, other measures lose impact: people may not be able to wash hands or flush and clean latrines properly, soap alone won’t help if there isn’t water to use, and reducing crowding won’t prevent infections from contaminated water exposure. Ensuring safe water in sufficient quantity directly reduces exposure and supports the overall effectiveness of other interventions, making it the most impactful choice for preventing diarrheal diseases in this setting.