1987 Carroll County cryptosporidiosis outbreak
The 1987 Carroll County cryptosporidiosis outbreak was a significant distribution of the Cryptosporidium protozoan in Carroll County, Georgia. Between January 12 and February 7, 1987, approximately 13,000 of the 65,000 residents of the county suffered intestinal illness caused by the Cryptosporidium parasite.
Source: Wikipedia — 1987 Carroll County cryptosporidiosis outbreak (CC BY-SA 4.0)