When Will Cyclospora Outbreak End? It Could Be Weeks
Summary
A cyclospora outbreak linked to contaminated iceberg lettuce is ongoing in the United States, with thousands of cases reported. Health officials have recalled the lettuce causing the outbreak, but new cases may continue for weeks due to the parasite’s incubation period and delayed diagnosis.Key Facts
- The CDC has confirmed 1,645 cases and 141 hospitalizations, but some states report much higher numbers (over 6,000 cases in Michigan).
- The outbreak is linked to shredded iceberg lettuce from Taylor Farms de Mexico, which was recalled on July 17.
- The FDA initially reported a positive test for contamination but later said it was a false positive; however, investigations still point to Taylor Farms lettuce as the source.
- Cyclospora symptoms can appear 2 days to 2 weeks after eating contaminated food, so new cases can appear even after the product is removed.
- Diagnosing cyclospora can be difficult and may require multiple stool samples and specialized testing.
- The outbreak is expected to continue into August before cases decline.
- Seasonal weather affects the parasite because it needs warm conditions to become infectious, so cooler weather may help reduce infections.
- Cyclospora outbreaks often occur during warmer months when imported produce is common.
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