Dr. Scott Gottlieb on cyclospora outbreak: The false positive test result is 'a red herring'

Watch on YouTube ↗  |  July 21, 2026 at 11:35  |  8:26  |  CNBC
Speakers
Scott Gottlieb — Former FDA Commissioner; Board Member (Pfizer, Illumina, UnitedHealth); Partner at NEA (Venture Capital)

Summary

Former FDA Commissioner Dr. Scott Gottlieb discusses the cyclospora outbreak linked to Taylor Farms, calling a false positive test result a 'red herring' and emphasizing the strong epidemiological evidence. He reassures that FDA is on the farm and that lettuce in restaurant chains is now safe, noting large chains like Taco Bell have excellent supply chain management. He addresses the stock impact on Sweetgreen and traffic drop at Taco Bell but does not offer explicit investment advice.

  • FDA isolated Taylor Farms as the probable source of the cyclospora outbreak based on epidemiological evidence, not a single test result.
  • A false positive test result does not weaken the case; the real strength is in tracing 90% of patients in Michigan having eaten lettuce.
  • Lettuce currently entering the market is being tested and sourced from different suppliers, making restaurant chains safer now than weeks ago.
  • Large food chains with robust supply chain management, such as Taco Bell, McDonald's, and Cracker Barrel, can quickly isolate contamination sources.
  • Taco Bell saw a 19% traffic drop and Sweetgreen shares fell 25% on fears, but Gottlieb says he would eat at both without concern.
  • Consumers can mitigate risk by buying whole lettuce heads or local produce, as U.S. local lettuce has no reported cyclospora cases.
  • The outbreak cluster appears tied to the Great Lakes region and was likely caused by contaminated irrigation water on a specific farm.
  • Gottlieb sees no clear evidence that recent budget cuts to FDA/CDC caused a delayed response, calling such conclusions premature.
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