Explosive Diarrhea Outbreak: Parasite Sickness Spreads

An outbreak of cyclosporiasis, a gastrointestinal illness characterized by explosive diarrhea, is currently affecting individuals in at least 17 states across the United States. The exact number of cases is likely underestimated due to reduced surveillance and individuals not seeking medical attention for diarrheal illnesses.

The parasite responsible, Cyclospora cayetanensis, is frequently found in fresh produce and is often transmitted through contamination with human sewage, a common route during summer. While specific contaminated foods for this current outbreak remain unknown, past outbreaks have been linked to items such as raspberries, basil, cilantro, lettuce mixes, parsley, snow peas, and green onions.

Experts emphasize that thorough washing of all fruits and vegetables under cold running water is the most crucial preventative measure. While washing may not be entirely foolproof due to the parasite's ability to hide in crevices, it significantly reduces risk. Cooking produce is also an effective intervention for eliminating the parasite, though this alters the food's nature.

This widespread illness highlights the importance of robust public health surveillance systems. Maintaining national and state programs for foodborne illness monitoring is vital for preventing, identifying, and responding to such outbreaks, which can involve produce from both domestic and international sources. Individuals experiencing severe symptoms like dehydration or nausea should consult a doctor.