Cyclosporiasis outbreak reported
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The gist
US officials declared the end of the largest recorded cyclosporiasis outbreak, tied to iceberg lettuce.
The parasite surge sickened thousands and raised questions about imported-food safety.
Background
Cyclosporiasis is a gastrointestinal illness caused by the microscopic parasite Cyclospora cayetanensis, which can cause watery diarrhea and other intestinal symptoms. Outbreaks tend to occur most often in late spring and summer. This year's surge was dominated by a multi-state outbreak linked to shredded iceberg lettuce traced to Taylor Farms and growers in central Mexico. The previous worst year for US infections was 2019, when about 4,700 illnesses were reported.
How it unfolded
- May 1, 2026Since May 1, nearly 20,000 laboratory-confirmed cyclosporiasis cases were reported in the US, more than 16 times the number during the same period last year.
- mid-July 2026Taylor Farms de Mexico announced it had removed all iceberg lettuce sourced from central Mexico from the US market, and Taylor Farms began a recall.
- Jul 24, 2026Reports of slumping consumer confidence in lettuce and other fresh produce during the outbreak, with Taylor Farms lettuce stacked in a Washington, D.C. grocery store.
- Aug 27, 2026The outbreak, spanning 20 states, had sickened at least 11,458 people, with 495 hospitalized and two deaths, according to the FDA and CDC.
- Sep 3, 2026Michigan's health department stated it had 14,718 cases, including the first two deaths identified in the nationwide outbreak.
- Sep 8, 2026AP reported that FDA inspections of foreign food sites, including the Mexican farm linked to the outbreak, are down nearly 35% since 2019.
- Sep 10, 2026Federal officials were poised to declare the end of the outbreak, according to the Washington Post and two people familiar with the matter.
- Sep 11, 2026US officials declared the end of the largest recorded cyclosporiasis outbreak; by August, reported infections had fallen to fewer than two per day on average.
Who’s saying what
- Official
- FDA officials said they are confident that all recalled iceberg lettuce related to this specific outbreak is off the market.
- Analysts
- AP reported that FDA foreign inspections have been down nearly 35% since 2019, underscoring a longer-term trend of fewer international inspections to catch contaminated produce.
Still unverified
The Washington Post reported, citing two people familiar with the matter, that federal officials were poised to declare the end of the outbreak; the declaration was expected as soon as Thursday. Some case counts and dates vary across sources (e.g., 11,458 cases as of Aug 27 vs. nearly 13,000 tied to the multistate outbreak; 20 vs. 21 states).