Mystery Parasite Outbreak Affects Over 1,100 People in 31 States
The CDC has reported a major outbreak of cyclosporiasis, with over 1,100 cases confirmed across the United States, marking the largest outbreak in years.
Editorial Staff
1 min read
Updated 3 days ago
The United States is currently experiencing its largest outbreak of cyclosporiasis in several years, with the Centers for Disease Control and Prevention (CDC) reporting a total of 1,186 cases as of July 9, 2026.
Of these cases, 843 have been identified as domestically acquired, while an additional 343 cases are linked to travel outside the country.
Health officials are urging individuals to take precautions and report any symptoms associated with the parasite, which can cause gastrointestinal illness.