Cholera in Portugal, 1974. II. Transmission by bottled mineral water.
During a cholera epidemic, Vibrio cholerae was isolated from two springs which supplied mineral water to a spa and to a commercial water bottling plant. Epidemiologic investigation found that cholera attack rates were 10-fold greater among visitors to the spa than among non-visitors. A subsequent matched-pair case-control study which excluded persons who had visted the spa showed that a history of consumption of the bottled non-carbonated water was significantly more common among bacteriologically confirmed cholera cases than among paired controls.
D002771:Cholera / Q000635:transmission*; D004196:Disease Outbreaks; D006801:Humans; D011174:Portugal; D014871:Water Microbiology; D014881:Water Supply