Should I be worried about Cyclospora?
Foodborne illnesses are always a concern for families. Although government agencies monitor the food supply closely, the current Cyclospora outbreak is a reminder that consumers also play an important role in preventing illness. While the risk of infection for any individual family is low, knowing the symptoms and practicing safe food habits can help keep your family healthy.
What Is Cyclospora?
Cyclospora cayetanensis is a microscopic parasite that infects the intestines. People become infected by eating food or drinking water contaminated with the parasite, most often fresh produce such as berries, lettuce, packaged salads, cilantro and basil. Unlike many stomach viruses, Cyclospora does not spread directly from person to person.
Symptoms
Symptoms usually begin about one week after exposure and include watery diarrhea, stomach cramps, nausea, loss of appetite and fatigue. Illness may last for several weeks and can come and go. Young children and people with weakened immune systems may experience more severe illness.
Caring for Mild Illness
If your child has mild diarrhea without signs of dehydration, encourage plenty of fluids, including water, oral rehydration solutions (such as Pedialyte) or clear broths. Offer small, frequent sips and continue a normal diet as tolerated.
When to Call Your Doctor
Seek medical care if your child has:
- Diarrhea lasting longer than four to seven days, with or without fever
- Signs of dehydration, including fewer wet diapers, dry mouth, no tears when crying or unusual drowsiness
- Bloody stools
- Significant weight loss or refusal to eat
- An underlying medical condition or weakened immune system
Because Cyclospora symptoms are similar to many other gastrointestinal illnesses, diagnosis requires a special stool test that must be specifically requested by your doctor.
Treatment
Cyclospora is treated with the prescription antibiotic trimethoprim-sulfamethoxazole (Bactrim). Most children take it for three to seven days and symptoms often improve within 48 hours. There is currently no vaccine or over-the-counter treatment.
Prevention Tips
The best way to reduce your family’s risk is through safe food and water practices:
- Rinse fresh fruits and vegetables thoroughly under running water before eating, even if they will be peeled.
- When traveling to areas where Cyclospora is common, drink bottled or boiled water. Chlorine tablets and iodine are not reliable against this parasite.
- Avoid raw produce while traveling unless you can wash and peel it yourself.
- Encourage regular handwashing with soap and water before meals and after using the bathroom. Although handwashing alone won’t prevent Cyclospora infection, it remains an important habit for preventing many illnesses.
Key Takeaways for Parents
The recent Cyclospora outbreak serves as a helpful reminder that food safety is a shared responsibility. Although the likelihood of your child becoming infected is very low, recognizing the symptoms, knowing when to seek medical care and following simple food safety practices can greatly reduce the risk. Staying informed and practicing these everyday habits can help protect your family and provide peace of mind during outbreak seasons.
Dr. Marnie Baker is a pediatrician at MemorialCare Medical Group โ Irvine (Barranca) Pediatrics Health Center.










