Dangerous Parasite Linked to Fresh Produce Sickens People Across Several U.S. States
Health Officials Urge Americans to Wash Raw Fruits and Vegetables Thoroughly
By Dr. Delphine Aso
As families prepare for holiday cookouts and summer picnics, health officials are urging Americans to take extra care before reaching for fresh berries or a bowl of green salad.
A parasite known as Cyclospora has been linked to illnesses reported across several U.S. states, raising concerns about contaminated fresh produce. Public health authorities are investigating the outbreak while reminding consumers that proper food handling remains one of the best ways to reduce the risk of infection.
What Is Cyclospora?
Cyclospora is a microscopic parasite that can contaminate fresh fruits and vegetables. People become infected after consuming food or water carrying the parasite.
Unlike many common stomach bugs, Cyclospora infections can cause symptoms that linger for days or even weeks if left untreated. In some cases, people recover only to experience symptoms again weeks later.
Health experts stress that while the illness is rarely life-threatening for healthy adults, it can be particularly challenging for young children, older adults, and people with weakened immune systems.
Symptoms Can Be Severe
The infection primarily affects the digestive system. Common symptoms include:
- Frequent watery diarrhoea
- Severe stomach cramps
- Nausea
- Loss of appetite
- Fatigue
- Bloating
- Weight loss
- Occasional vomiting
Symptoms typically appear about one week after consuming contaminated food, although the timing can vary from person to person.
Many patients describe the illness as exhausting because diarrhoea can continue for an extended period, making dehydration a major concern.
Fresh Produce Under Investigation
Investigators believe contaminated fresh produce is the most likely source of the current outbreak.
Items such as leafy greens, herbs, berries, and other fruits and vegetables have historically been associated with Cyclospora outbreaks because they are often eaten raw.
Officials are working to trace where the contaminated produce originated, but investigations can take time, particularly when food has been distributed across multiple states.
Consumers are advised not to panic but to remain cautious while authorities continue gathering information.
How to Protect Yourself
Health experts recommend several simple steps to reduce your risk of infection:
- Wash all fresh fruits and vegetables thoroughly under running water.
- Remove damaged or bruised portions of produce.
- Refrigerate perishable foods promptly.
- Wash your hands before preparing meals.
- Use clean cutting boards and kitchen utensils.
- Drink water from safe, reliable sources.
Although washing produce cannot eliminate every possible contaminant, it significantly reduces the risk of many foodborne illnesses.
When Should You Seek Medical Help?
Anyone experiencing persistent diarrhoea lasting several days should contact a healthcare provider, especially if symptoms are accompanied by dehydration, severe stomach pain, fever, or significant weight loss.
Doctors can diagnose Cyclospora through specialised laboratory testing, and the infection can usually be treated effectively with prescription medication.
Early diagnosis often shortens recovery time and helps prevent complications.
Staying Vigilant
Food safety experts emphasise that outbreaks like this remain relatively uncommon compared with the millions of meals safely enjoyed every day.
However, the incident serves as a timely reminder that fresh produce, while nutritious, still requires careful preparation before consumption.
As investigations continue, health authorities are encouraging the public to stay informed through official updates while maintaining good food hygiene practices at home.
For now, experts say one simple habit could make all the difference: wash your fruits and vegetables thoroughly before eating them.

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