USA – Will There Be a Cyclospora Outbreak in the U.S. This Summer?

Food Poisoning Bulletin

Will there be a cyclospora outbreak in the United States this summer? There have been multiple cyclospora outbreaks in the past nine years, including in 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, and 2021. This year may be no exception.

In the past, Cyclospora outbreaks have been linked to fresh produce, including cilantro, raspberries, basil, mesclun, vegetable trays, bagged salad mixes, and snow peas. The cyclospora parasite is transmitted through human feces. The oocyst must mature, or sporulate, outside of the body before it becomes infectious. This infection is not passed person-to-person.

It is very difficult to protect yourself against this parasite, since it can cling to produce, especially produce such as leafy greens and herbs, and is not easily washed or rinsed off. And since most of the foods it contaminates are eaten without being heated, there is no kill step to destroy the parasite.

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