Cyclosporiasis Outbreak 2026: Symptoms & Safety Tips

Have you heard about the cyclosporiasis outbreak spreading across the U.S.? It’s a stomach bug that’s causing serious discomfort. Here’s what you need to know to protect yourself and your family.

The CDC is investigating a rise in cases. Over 200 people have gotten sick since June. The illness comes from a tiny parasite. It’s called Cyclospora cayetanensis. You get it from contaminated food or water.

What is cyclosporiasis?

Cyclosporiasis is an infection of the small intestine. It’s caused by a parasite. The main symptom is watery diarrhea. It can be very frequent. You might also have stomach cramps, bloating, nausea, and fatigue. Some people lose weight because they can’t keep food down.

Symptoms usually start about a week after exposure. Without treatment, they can last from a few days to over a month. That’s why it’s important to see a doctor if you have ongoing diarrhea.

The cyclosporiasis outbreak: Current status

According to a NPR report, the CDC has detected cases in 34 states. At least 200 people have been infected. Some have been hospitalized, but no deaths have been reported. The investigation is ongoing. Officials don’t know the exact food source yet. But past outbreaks have been tied to imported fresh produce — we’ve covered this topic in depth in our cyclosporiasis outbreak guide.

The CDC, along with state health departments, is investigating. They are trying to trace back where the contaminated food came from. It takes time to identify the cause. Sometimes the source is never found. But knowing the typical foods helps you take precautions.

How to treat and prevent cyclosporiasis

If you think you have it, see your doctor. A stool test can confirm the infection. The standard treatment is an antibiotic called trimethoprim-sulfamethoxazole (Bactrim), which your doctor can prescribe. People who are allergic to sulfa may get other options. Treatment with the prescribed antibiotic usually resolves the infection.

To prevent cyclosporiasis, wash your fresh fruits and vegetables thoroughly. But remember: washing alone may not remove all parasites. Cooking kills them, so consider heating high-risk produce like cilantro and basil. For more detailed guidance, check out our guide on cyclosporiasis prevention and kitchen habits. Avoid untreated water. There’s no vaccine.

What to do if you have symptoms

If you have diarrhea that lasts more than a few days, especially with stomach pain or nausea, contact your healthcare provider. Tell them you’re concerned about cyclosporiasis. They can order the right test.

While you wait for an appointment, stay hydrated. Drink water with electrolytes. Your doctor may recommend gentle foods until you recover. Avoid dairy and fatty foods if they upset your stomach.

The Bottom Line

The cyclosporiasis outbreak is a real concern, but you can lower your risk with simple food safety steps. Stay informed by following CDC updates. If you get sick, don’t wait — see your doctor. With proper care, this infection is treatable.