Bottled beverages and typhoid fever: the Mexican epidemic of 1972-73.

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Abstract
A chloramphenicol resistant strain of S. typhi which caused a very large epidemic of typhoid fever in Mexico in 1972-73 survived in opened bottles of one carbonated drink with a pH of 4.6 for two weeks and in another such drink with a pH of 5.1 for six months. Bottled beverages are potential sources of large outbreaks of enteric disease, and deserve the same type of standards sand monitoring as comparable fluids such as milk.