The discovery of the first U.S. fatalities linked to a cyclospora outbreak in Michigan has raised public health concerns. These deaths are linked to an intestinal illness caused by a parasite that usually is not fatal, making the news particularly unusual.
The Michigan Department of Health and Human Services reported that both deceased individuals had pre-existing health conditions that may have been exacerbated by the disease and dehydration. The illness developed before the U.S. Food and Drug Administration’s voluntary recall of iceberg lettuce on July 17.
Cyclospora, a heat-loving microscopic parasite, causes an illness known as cyclosporiasis, characterized by watery diarrhea and frequent, sometimes explosive, bowel movements. The parasite spreads through fecal contamination, often affecting produce like fruits and vegetables irrigated with contaminated water, according to the Centers for Disease Control and Prevention (CDC).
While cyclosporiasis is generally less common than other foodborne diseases such as salmonella or E. coli, its incidence has been climbing over the past decade, with a notable increase in 2018 and 2019. In 2019 alone, about 4,700 cases were reported in the U.S.
The current outbreak has surpassed previous records, with the CDC acknowledging over 18,000 confirmed or suspected cases. However, state reports suggest the number may exceed 20,000 nationwide.
An investigation has linked the outbreak to lettuce from Mexico served at Taco Bell restaurants in nine states. As of late July, 1,947 cases have been associated with this source, resulting in at least 98 hospitalizations, as per the CDC. Ongoing investigations may identify other potential sources such as different brands, restaurants, or distribution channels.
For further details and updates, refer to the widespread outbreak report.
This article includes contributions from Kate Wells.
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