Cyclosporiasis Is Spreading Across The United States— Here’s What To Know
Cyclosporiasis is a food-borne illness caused by a parasitic infection that has been making headlines lately. With over 1,200 reported cases in Michigan alone and outbreaks in 17 states across America, it’s important to understand this infection that tends to be more common in the summer months.
What Is Cyclosporiasis?
Cyclosporiasis is typically contracted through contaminated water or food that contains the parasite. In the United States, outbreaks have been linked to fresh produce, with items like lettuce, basil, cilantro, bagged salad mixes, and raspberries being common culprits. However, the specific food responsible for the recent outbreaks remains unknown.
Common Symptoms
Symptoms of cyclosporiasis usually appear about a week after exposure to contaminated food, ranging from two days to two weeks. Nausea, bloating, cramping, and profuse watery diarrhea are common symptoms. Unlike other gastrointestinal illnesses that resolve in a few days, cyclosporiasis can cause diarrhea to last weeks or even months. If diarrhea persists for more than three days, it’s crucial to seek medical attention for a 10-day course of antibiotics.
Who Is Most At Risk?
While cyclosporiasis can affect anyone, individuals with weakened immune systems, such as children, the elderly, pregnant women, those with chronic medical conditions, and individuals on chemotherapy, are at higher risk. Dehydration from excessive fluid loss due to diarrhea is a common complication in these vulnerable populations.
Why Does This Occur In Summer?
Cyclosporiasis is most prevalent between May and August due to the parasite thriving in warmer, humid climates. With increased consumption of produce and imports of fruits and vegetables during the summer, cases of cyclosporiasis tend to surge during this time.
How Can You Protect Yourself?
Preventing cyclosporiasis is relatively simple. Thoroughly washing hands for 20 seconds before preparing food, eating, and after using the bathroom can reduce the risk of exposure. Additionally, washing and scrubbing produce with water and refrigerating it promptly can help prevent the growth of the parasite.
Surveillance And Public Health
As of July 2025, the CDC’s Foodborne Diseases Active Surveillance Network no longer requires reporting for cyclosporiasis. While confirmed cases are still reported to state health departments, this change may impact accurate case counts in the United States. Staying informed about symptoms and preventive measures is crucial in safeguarding against cyclosporiasis outbreaks.
In conclusion, cyclosporiasis outbreaks serve as a reminder of the global nature of our food supply. By prioritizing sanitation, surveillance, and outbreak investigations, as well as staying informed on symptoms and protective measures, we can work towards a safer food environment for all.
