Zoo water fountain, Minnesota

In July 1997, the Minnesota Department of Health (MDH) reported an outbreak of Cryptosporidiosis among children who visited the Minnesota Zoo (MMWR Weekly, October, 1998). A total of 369 cases were reported, of which 73 were subsequently confirmed by means of laboratory cultures. The report by MDH indicated case onset of vomiting or diarrhea 3 to 15 days after exposure to the zoo fountain.  However, the fountain was not confirmed as the source. Exclusion of people from the suspect water fountain was suggested to reduce the risk of contamination to the public.