Association of State and Territorial Health Officials

A cyclosporiasis outbreak has surged to over 4,173 confirmed cases across 41 U.S. states this week, with symptoms including severe diarrhea and hospitalizations rising to 308. The CDC suspects multiple sources, initially linking cases to shredded iceberg lettuce from Mexico, but later retracted this connection after false positives. State health departments are struggling to trace cases due to the parasite's complexity, relying on manual investigations.

The cyclosporiasis outbreak has surged to over 4,173 confirmed cases across 41 U.S. states, with cases linked to shredded iceberg lettuce grown in central Mexico and sold by Taylor Farms. The CDC estimates an additional 7,400 unconfirmed cases, and 308 hospitalizations have been reported.

A cyclosporiasis outbreak has surged to over 4,173 confirmed cases across 41 U.S. states, linked to shredded iceberg lettuce grown in central Mexico and sold by Taylor Farms. The CDC estimates 7,400 additional unconfirmed cases, with 308 hospitalizations reported as of July 20, 2026.

A cyclosporiasis outbreak has surged to over 4,173 confirmed cases across 41 states, with symptoms including severe intestinal issues and 308 hospitalizations. The CDC links 1,644 cases to shredded iceberg lettuce from central Mexico sold by Taylor Farms, while state health departments face challenges tracking the parasite's complex genome.

The number of cyclosporiasis cases has surged to over 4,173 across 41 states, with Indiana, Kentucky, Michigan, Ohio, and West Virginia linked to Taylor Farms' shredded iceberg lettuce from central Mexico. The CDC estimates over 7,400 additional unconfirmed cases, while 308 people have been hospitalized.

A cyclosporiasis outbreak has surged to over 4,173 confirmed cases across 41 U.S. states, linked to shredded iceberg lettuce from central Mexico sold by Taylor Farms. The CDC estimates over 7,400 additional unconfirmed cases, with 308 hospitalizations reported.

A cyclosporiasis outbreak has surged to over 4,173 confirmed cases across 41 U.S. states, linked to shredded iceberg lettuce from central Mexico sold by Taylor Farms. The CDC estimates more than 7,400 additional unconfirmed cases, with 308 hospitalizations reported.