A foodborne gastrointestinal illness has emerged across 31 states, leading to 86 hospitalizations, as federal health officials report. The illness is identified as cyclosporiasis, caused by the Cyclospora cayetanensis parasite.

The image above shows a fresh stool sample revealing four Cyclospora cayetanensis oocysts after staining.
According to Michigan state health officials, lettuce or salad greens might be the source of their outbreak. This infection is characterized by severe diarrhea. Dr. Natasha Bagdasarian, Michigan’s chief medical executive, mentioned that lettuce frequently appears in their investigation.
While lettuce is suspected, officials cannot confirm the specific type of produce, nor identify a particular grower or supplier. Other food items remain under consideration. Despite being the focal point in Michigan, the outbreak spans a national level, with Michigan reporting the majority of the 2,640 cases. The Centers for Disease Control and Prevention (CDC) indicates nearly 3,000 total cases.
The CDC cautions that hospitalizations could rise, as the onset of symptoms can be delayed by a week. Symptoms include flu-like conditions such as severe fatigue and body aches, progressing to watery diarrhea, severe gas, stomach cramps, and nausea. Dehydration is a significant concern.
Treatment involves antibiotics and hydration. Health officials in Michigan advise consumers to avoid prepackaged salads, instead, choose individual heads of lettuce. Thorough rinsing is essential, with outer layers discarded. Cooking vegetables when possible is recommended.

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