Cyclosporiasis outbreak in U.S.: understanding the gastrointestinal illness and its spread
The U.S. is experiencing a widespread cyclosporiasis outbreak, a gastrointestinal illness caused by the microscopic parasite Cyclospora cayetanensis. Over 1,645 confirmed domestic cases have been reported since May 1, with thousands more under analysis, significantly exceeding previous years. The infection spreads through contaminated food or water, not person-to-person, causing symptoms like watery diarrhoea, bloating, and fatigue, which can last for weeks and be severe in vulnerable groups. Diagnosis is challenging, requiring multiple stool samples. Treatment involves trimethoprim-sulfamethoxazole, and prevention focuses on thorough washing of fresh produce and safe food handling practices.
Key Points
- A widespread cyclosporiasis outbreak is affecting the U.S., with over 1,645 confirmed cases since May 1.
- The illness is caused by the Cyclospora cayetanensis parasite, transmitted through contaminated food or water.
- Symptoms include severe watery diarrhoea, bloating, and fatigue, lasting from days to over a month.
- Diagnosis is challenging, often requiring multiple stool samples, and treatment involves specific antibiotics.
- Prevention emphasizes thorough washing of fresh produce and adherence to safe food handling practices.
Exam Facts
- Illness: Cyclosporiasis.
- Causative agent: Cyclospora cayetanensis parasite.
- Confirmed cases in U.S.: 1,645 since May 1.
- Source for information: U.S. Centers for Disease Control and Prevention (CDC).
- Recommended treatment: Trimethoprim-sulfamethoxazole (TMP-SMX).
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