The gastrointestinal disease cyclosporiasis, which has affected over 3,000 individuals across 31 U.S. states, may also be present in Canada, according to food safety expert Keith Warriner. While Canadian public health officials report no recent outbreaks, Warriner suggests that undetected cases could exist due to insufficient surveillance. Imported produce, particularly berries and herbs like basil and cilantro, has previously been linked to outbreaks. The Centers for Disease Control and Prevention (CDC) has confirmed 843 cases and is investigating the source, with symptoms including watery diarrhea and fatigue. Cyclosporiasis is most commonly found in tropical regions and typically increases during the summer months, coinciding with higher consumption of imported fruits and vegetables in Canada.
Why It Matters
Cyclosporiasis is primarily transmitted through contaminated food and water, with a significant risk associated with imports from regions where the parasite is endemic, such as Mexico and Central America. Historically, an average of 238 cases were reported annually in Canada from 2004 to 2019, with most cases linked to travel in high-risk areas. The parasite’s resistance to common sanitation methods, like washing and chlorine, poses challenges for food safety. Understanding the sources and transmission of cyclosporiasis is crucial for managing public health risks, especially during the peak contamination season from May to August.
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