Cyclospora: What You Should Know

Fresh fruits and vegetables are an important part of a healthy diet, but from time to time outbreaks of foodborne illness can occur. One of those illnesses is Cyclospora, a microscopic parasite that can infect the digestive tract and cause an illness known as cyclospora infection (cyclosporiasis).

While most people recover with appropriate treatment, the symptoms can linger for weeks if the infection isn’t recognized. Knowing what to watch for can help you get the care you need sooner.

How does Cyclospora spread?

Cyclospora is most often spread through food or water contaminated with the parasite. In the United States, infections are commonly linked to imported fresh produce, including:

Fresh herbs such as cilantro
Leafy greens
Berries
Snap peas

Unlike many stomach viruses, Cyclospora is not usually spread directly from one person to another, so having someone in your household become ill doesn’t necessarily place everyone else at risk.

What are the symptoms?

Symptoms typically begin about one week after eating contaminated food, although they can appear anywhere from two days to two weeks later.

Common symptoms include:

Persistent watery diarrhea
Stomach cramps and bloating
Nausea
Fatigue
Loss of appetite
Unintended weight loss
Mild fever

One unique feature of Cyclospora is that symptoms may improve for a few days, only to return again. Without treatment, the illness can last for several weeks.

When should you see a healthcare provider?

If you’ve been experiencing watery diarrhea that lasts more than a few days, especially if it’s accompanied by fatigue, weight loss, or persistent stomach discomfort, it’s a good idea to schedule an evaluation.

Be sure to let your provider know if you’ve recently traveled or eaten fresh produce that may have been part of a food recall or outbreak. Cyclospora isn’t detected by every routine stool test, so your provider may order specialized testing if it’s suspected.

How is it treated?

Most people recover with a course of prescription antibiotics. If you have an allergy to sulfa medications, let your provider know so the safest treatment plan can be discussed.

Staying well hydrated is also important while you’re recovering, especially if diarrhea has been ongoing.

Can I prevent it?

While it’s impossible to eliminate every risk, a few simple habits can help reduce your chances of foodborne illness:

Wash your hands before preparing or eating food.
Rinse fresh fruits and vegetables under running water before eating them.
Stay informed about food recalls and public health advisories.
Seek medical care if stomach symptoms persist instead of trying to manage them on your own.