Are you avoiding salads right now? Same! Fresh summer salads, bowls of ripe berries, and dishes topped with fresh cilantro are usually the definition of healthy eating. But as recent headlines about Cyclospora outbreaks remind us, even the most nutritious foods can carry unwelcome microscopic hitchhikers.
Cyclospora cayetanensis is a tiny, single-celled parasite that causes an intestinal infection known as cyclosporiasis. While it’s invisible to the naked eye, its effects—which include watery, explosive diarrhea, stomach cramps, and severe fatigue—are hard to ignore and can drag on for weeks or even months if left untreated.
Unlike bacterial food poisoning, Cyclospora doesn’t spread easily from person to person. The parasite has to spend days or weeks in the environment to mature before it becomes infectious. That means you almost always get it from consuming food or water contaminated with feces.
Fortunately, you don’t have to swear off fresh produce entirely. By adjusting how you handle, wash, and select your food, you can significantly reduce your risk.
How to Handle and Wash Fresh Produce
Washing your produce won’t guarantee that every single parasite is removed, but it is one of the easiest ways to slash your overall risk. Here is the safest, step-by-step protocol to follow when bringing fresh fruits and veggies into your kitchen:
1.Wash your hands first: 20 seconds.
Always wash your hands with warm water and soap for at least 20 seconds before and after handling any fresh fruits or vegetables.
2.Rinse under clean, running water: Before peeling or cutting.
Rinse your produce thoroughly under cool, clean running water. Do this even if you plan to peel the item, as cutting through a dirty peel can transfer parasites from the outside directly into the flesh.
3.Scrub firm produce: Use a clean produce brush.
For firm-skinned fruits and vegetables (like melons, cucumbers, and potatoes), gently scrub the surface with a clean, dedicated produce brush to help dislodge stubborn dirt and contaminants.
4.Cut away damaged areas: Discard bruised spots.
Cut away any bruised, damaged, or soft spots on your fruits and vegetables before preparing or eating them, as these areas can harbor pathogens.
5.Refrigerate immediately: Within 2 hours.
Get your cut, peeled, or cooked fruits and vegetables into the refrigerator as soon as possible—always within 2 hours of prep.
Smart Eating Decisions: High-Risk vs. Low-Risk Foods
During an active outbreak, certain raw items pose a much higher risk of Cyclospora contamination. This is because their complex, textured surfaces (like the crevices of leafy greens or the delicate nooks of raspberries) easily trap microscopic parasites and make them incredibly difficult to wash away.
By contrast, foods that are cooked or peeled are dramatically safer. The heat of cooking (bringing food to at least 70°C or 158°F) destroys the parasite, and peeling removes the contaminated outer layer entirely.
| High-Risk Foods (Eat with Caution / Cook When Possible) | Low-Risk Foods (Safer Choices) |
| Leafy Greens & Salad Mixes: Romaine, iceberg, and pre-packaged salad kits. | Peelable Fruits: Bananas, oranges, avocados, and mangoes. |
| Fresh Herbs: Cilantro, basil, and parsley. | Cooked Vegetables: Broccoli, carrots, green beans, and potatoes. |
| Delicate Berries: Raspberries and blackberries. | Thick-Skinned Melons: Watermelons and cantaloupes (washed and scrubbed before slicing). |
A Quick Note on Pre-Washed Greens: Don’t let a “triple-washed” or “pre-washed” label lull you into a false sense of security. While convenient, these packages can still harbor Cyclospora if contaminated water was used during processing. Give them another rinse at home!
What to Do If You Travel
If you are traveling to tropical or subtropical regions where Cyclospora is endemic (regularly occurring), take extra precautions with what you drink and eat:
- Stick to safe water: Only drink sealed bottled water, boiled tap water, or carbonated beverages from sealed cans. Avoid ice unless you are certain it was made from purified water.
- Adopt the traveler’s motto: “Boil it, cook it, peel it, or forget it.” Avoid raw, unpeeled fruits and salads when traveling in areas with poor sanitary conditions.
When to See a Doctor
Most healthy people will eventually recover from a Cyclospora infection on their own, but it can take weeks or even cause relapses. If you experience severe, watery diarrhea that lasts longer than a week, is accompanied by a loss of appetite, bloating, or extreme fatigue, check in with a healthcare provider.
Be sure to mention if you have eaten raw leafy greens, berries, or recently traveled. Because Cyclospora is a parasite, it isn’t picked up by standard routine stool tests, so your doctor will need to specifically request a Cyclospora test to get you the right treatment (typically a common antibiotic).
