Washington: Health authorities in the United States are investigating a growing outbreak of cyclosporiasis, a foodborne intestinal illness caused by the microscopic parasite Cyclosporiasis. Hundreds of infections have been reported across multiple states, with officials yet to identify the exact source of contamination.

The Centers for Disease Control and Prevention (CDC) and the Food and Drug Administration (FDA) are jointly investigating the outbreak. Between May 1 and June 16, the CDC confirmed 145 cases and 20 hospitalisations across 17 states. Meanwhile, Michigan alone reported nearly 300 cases last week, far exceeding its usual annual average of around 50 infections.

What is Cyclospora?

Cyclosporiasis is caused by the parasite Cyclospora cayetanensis, which infects the intestines. People usually become infected after consuming contaminated food or water, particularly fresh fruits, leafy vegetables, herbs and salad ingredients that are eaten raw.

Unlike bacteria, washing produce under tap water may remove dirt but does not reliably eliminate the parasite, making proper farming and food handling practices essential.

Symptoms to watch for

Symptoms generally appear about a week after infection and can last for several weeks if left untreated. Common signs include:

  • Explosive watery diarrhoea
  • Stomach cramps and bloating
  • Nausea and vomiting
  • Loss of appetite
  • Fatigue
  • Low-grade fever
  • Weight loss

Some people may notice symptoms improve before returning again.

When to seek medical help

Doctors advise seeking medical attention if diarrhoea persists for several days or if symptoms of dehydration develop, including dizziness, excessive thirst, reduced urination or rapid heartbeat. Severe abdominal pain, persistent fever, blood in the stool or an inability to keep fluids down also require prompt medical care.

Older adults, young children and people with weakened immune systems are at greater risk of severe illness.

How to reduce the risk

Health experts recommend washing fruits and vegetables thoroughly, drinking safe water, practising good hand hygiene and purchasing produce from trusted sources. Although these measures cannot eliminate all risk, they can significantly reduce the chances of infection while investigations continue.#Cyclospora #Cyclosporiasis #CDC #FoodSafety #Health #UnitedStates #PublicHealth #News