The CDC issued a Level 2 Travel Health Notice for Costa Rica's Guanacaste Province after chikungunya cases surfaced near popular Playa Langosta. Travelers are told to take precautions.

A little-known parasite is making more Americans sick this summer. Here's what 'The New York Times' and the CDC say about the symptoms, the foods involved, and the simple habit that can help reduce ...

A new update and interactive map from the agency traces the ongoing outbreak of cyclosporiasis, which is caused by a food parasite, to a Taco Bell ingredient. There’s been a new update from the ...

Cyclospora is a microscopic parasite that can cause prolonged and recurring intestinal illness. — CDC The scale of a fast-moving foodborne illness threat is coming into sharper focus, and confirmed ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Emergency room visits for tick bites have climbed to the highest levels ...

Here’s something you don’t see every day: Health officials are warning Americans to be on the lookout for cyclosporiasis, a parasitic infection that causes “explosive” diarrhea—yes, we said it—and ...