FDA says Taylor Farms lettuce sample linked to parasite outbreak was a false positive

Jul 20 · Health USA MEX

A sample of iceberg lettuce from Taylor Farms wrongly tested positive for the cyclospora parasite, the U.S. Food and Drug Administration said, following a laboratory review that attributed the result to false amplification.

The FDA found no confirmed positive sample results for cyclospora as of July 19. Taylor Farms had voluntarily recalled iceberg lettuce sourced from central Mexico, product that had reached stores in 27 states. Taco Bell completed the removal of affected lettuce from its restaurants and said it would no longer source from Taylor Farms. Walmart also pulled several bagged salad products from shelves.

The multistate outbreak has sickened more than 1,600 people across 34 states, with roughly 100 hospitalized and no deaths reported. The CDC identified lettuce supplied to select Taco Bell locations in Indiana, Kentucky, Michigan, Ohio and West Virginia as a source of the outbreak, though the exact origin remains under investigation.

Covered by 12 outlets across 7 countries

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The reporting this story is built on

nos.nl NLD FDA: testuitslag die sla linkte aan diarree-uitbraak in VS was valspositief nbcnews.com USA FDA says Taylor Farms lettuce sample tested for cyclospora produced false positive for the parasite cbsnews.com USA Taylor Farms lettuce sample that tested positive for cyclospora was a false positive, FDA says

Additional coverage

Others reporting the same event

theguardian.com GBR FDA says review of Taylor Farms lettuce shows cyclospora finding was false positive elpais.com ESP La FDA retracta el resultado positivo a la lechuga de Taylor Farms, pero todavía la vincula con el brote de ciclosporiasis thehill.com USA FDA: Taylor Farms lettuce cyclospora finding was false positive cnbc.com USA FDA says Taylor Farms cyclospora finding was a false positive independent.co.uk GBR FDA says recall on Taylor Farms lettuce remains active despite ‘false positive’forbes.com USA Cyclospora Source Again Unknown After FDA Acknowledges False Positive: What We Know spiegel.de DEU Durchfallerkrankungen in den USA: Behörde meldet falsch-positives Ergebnis bei Test auf Parasit Cyclospora nikkei.com JPN 米国で流行の寄生虫感染症、レタスから検出は偽陽性原因なお不明 - 日本経済新聞

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