On Tuesday, July 21, 2026, Mexico’s Secretary of Health, David Kershenobich, confirmed that three cases of Cyclospora—an intestinal parasite causing what is commonly called ‘explosive diarrhea’—have been reported in the country. Despite the alarming nickname, he emphasized that these cases fall within normal epidemiological patterns and do not represent an outbreak.

This contrasts sharply with the situation in the United States, where at least 1,645 cases have been confirmed, though no deaths have been reported there either. “In Mexico, there have only been three cases of Cyclospora, and these are usual occurrences within common epidemiology. We do not have a Cyclospora outbreak,” Kershenobich stated during the morning press conference on July 21.

Details about when and where these cases occurred in Mexico were not disclosed, but the patients are reportedly recovering. The Secretary reassured the public that Cyclospora is not fatal when treated properly.

Regarding the source of the contamination linked to the U.S. outbreak, Mexican health authorities are conducting their own investigation. Initial tests by the U.S. Food and Drug Administration (FDA) suggested a possible link to lettuce from Guanajuato, Mexico, but this was later identified as a false positive.

“We took samples from the company in Guanajuato and are carrying out our own research. So far, no evidence has been found to confirm that the contamination originated there,” Kershenobich explained. This proactive approach reflects Mexico’s commitment to transparency and public health, especially amid cross-border concerns.

Cyclospora symptoms include persistent watery diarrhea, severe abdominal cramps, extreme fatigue, and weight loss. There is currently no vaccine, but treatment typically involves antibiotics. Specialists advise avoiding pre-packaged salads in high-incidence areas, thoroughly washing fruits and vegetables—especially lettuce—and seeking medical attention if diarrhea persists.

For migrants and residents navigating food safety in Mexico and abroad, staying informed about such health alerts is crucial. This situation also highlights the importance of robust food safety systems and cross-border cooperation to prevent and manage outbreaks.