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US Cyclospora Outbreak Ends After Sickening Nearly 13,000

Friday, September 11, 2026 · 3 sources

Federal health officials have declared an end to the largest cyclospora outbreak in US history, which affected 21 states and hospitalized over 500 people. The outbreak, linked to contaminated lettuce, resulted in two deaths in Michigan, the state with the most reported cases.

Federal health officials announced on Friday that the country's largest outbreak of cyclosporiasis has ended. The outbreak, which began earlier this year, sickened 12,883 people across 21 states, according to the Centers for Disease Control and Prevention (CDC). More than 500 people were hospitalized due to the illness, which is caused by a parasite found in contaminated food. In this case, the contaminated lettuce was the suspected source of the outbreak. Michigan was the hardest-hit state, with two reported deaths. Health authorities worked to contain the outbreak and prevent further cases. The CDC reported that the number of new cases had significantly decreased in recent weeks, leading to the declaration that the outbreak has ended. The agency will continue to monitor for any potential new cases. The end of the outbreak is a relief to those affected, as well as to health officials who worked tirelessly to contain it. The CDC's efforts to track and prevent the spread of the illness helped to bring the outbreak under control. The agency's work in investigating the source of the outbreak and providing guidance to the public also played a crucial role in ending the outbreak.

The CDC's announcement marks the end of a long and challenging period for those affected by the outbreak. The agency's dedication to protecting public health and preventing the spread of illnesses like cyclosporiasis is essential to keeping communities safe.

Go Deeper

What is cyclosporiasis?

Cyclosporiasis is a foodborne illness caused by a parasite found in contaminated food or water. It can cause symptoms such as diarrhea, stomach cramps, and weight loss.

How did the outbreak start?

The outbreak was linked to contaminated lettuce, although the exact source of the contamination is still under investigation. The CDC worked to track the source of the outbreak and provide guidance to the public on how to prevent further cases.

Which states were affected by the outbreak?

The outbreak affected 21 states, with Michigan being the hardest-hit state. Other states reported cases as well, although the exact number of cases varied by state.

What were the symptoms of the illness?

The symptoms of cyclosporiasis include diarrhea, stomach cramps, weight loss, and fatigue. In severe cases, the illness can lead to hospitalization and even death.

How can people prevent getting cyclosporiasis?

People can prevent getting cyclosporiasis by washing their hands regularly, especially after handling food or using the bathroom. They should also wash fruits and vegetables thoroughly before eating them, and avoid consuming contaminated food or water.