Mexican health officials say no evidence lettuce came from Guanajuato in cyclosporiasis outbreak

Mexico's health minister said no evidence has been found that the lettuce implicated in the recent cyclosporiasis outbreak was sourced from the central state of Guanajuato. He added that authorities are taking precautions in case the produce did originate there.

Mexican officials have traveled to Guanajuato to collect samples and are conducting a joint investigation with the U.S. Centers for Disease Control and Prevention, the minister said.

U.S. Health Secretary Robert F. Kennedy Jr. told reporters that the outbreak remains under control and that state health departments continue forensic testing and surveillance despite concerns about budget cuts.

The parasite Cyclospora, which causes diarrhea, stomach pain and nausea, has sickened more than 4,000 people in 41 states since early May, according to the CDC. Hundreds have been hospitalized, but no deaths have been reported.

The FDA previously announced a positive test for Cyclospora in a sample of lettuce supplied by Taylor Farms de Mexico, later retracting the result as a false positive after further review. Taylor Farms issued a statement saying the agency apologized for the mistake.

The investigation continues to focus on shredded iceberg lettuce from a single supplier, according to the FDA.