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. Cryptosporidiosis is characterized by watery diarrhea, stomach cramps or pain, dehydration, nausea, vomiting and fever. Symptoms typically last for 1–4 weeks in immunocompetent individuals.