CDC Investigates Parasite That’s Caused Cases of ‘Explosive’ Diarrhea in 18 US States

Increased cyclosporiasis activity across multiple U.S. states has prompted a federal investigation into the source of infections, with contaminated fresh produce and water remaining the primary suspected exposure routes.

Between May 1 and June 16, the CDC identified 145 cases across 17 states, including 20 hospitalizations, while Michigan separately reported more than 300 cases in a growing outbreak, contributing to more than 400 reported cases across 18 states.

Most illnesses occurred in people without recent travel, and investigators have not identified a single multistate source. The investigation highlights the challenges of tracing seasonal foodborne outbreaks and reinforces the importance of surveillance, timely case reporting, and safe produce handling to reduce illness. Read more from the Guardian here.