Severe cholera without adequate rehydration kills up
to half of affected persons (1). The World Health Organization
estimates that 3–5 million cholera cases occur
worldwide each year (2). Studies have identified multiple
risk factors for Vibrio cholerae infection, such as drinking
street-vended water, placing one’s hands into stored household
water, lack of drinking water treatment, eating food
prepared by a recently ill food handler, and not washing
hands with soap before eating food (3–8). These findings
suggest that cholera is transmitted through contaminated
water and poor hygiene practices. Therefore, interventions