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Cyclosporiasis is an intestinal infection caused by the Cyclospora cayetanensis parasite. Symptoms typically include watery diarrhea, abdominal cramps, nausea, fatigue, and loss of appetite. In some cases, the diarrhea can be explosive and last for several weeks. The infection is often associated with consuming contaminated food or water, particularly fresh produce like berries, lettuce, and herbs.
Cyclospora spreads primarily through the consumption of contaminated food or water. The parasite is often linked to fresh produce, particularly items like berries, salad greens, and herbs. Contamination usually occurs when the produce is irrigated or washed with contaminated water or handled by infected individuals who do not practice proper hygiene. The parasite is not transmitted from person to person.
Cyclospora outbreaks have been reported in the U.S. since the 1990s, with notable increases in cases linked to imported fresh produce. Past outbreaks have been tied to raspberries from Guatemala and salad mixes. In recent years, the current outbreak in Michigan has become one of the largest, with over 1,000 cases reported, highlighting the ongoing public health challenge posed by this parasite.
To prevent cyclosporiasis, individuals should wash hands thoroughly, especially before handling food. It is crucial to wash fruits and vegetables under running water, and cooking produce can kill the parasite. Avoiding consumption of raw or undercooked foods during outbreaks is advisable. Additionally, food safety practices in restaurants and food handling can help reduce the risk of contamination.
The current outbreak of cyclosporiasis has predominantly affected Michigan, which has reported over 1,200 cases, making it the largest outbreak in the state's history. Other states, including Ohio, North Carolina, and Massachusetts, have also reported cases, with health officials in at least 31 states investigating similar illnesses. This widespread impact highlights the national scope of the outbreak.
The CDC tracks foodborne illnesses through various surveillance systems, including the Foodborne Disease Outbreak Surveillance System and the National Notifiable Diseases Surveillance System. They collect data on reported cases, identify outbreaks, and analyze trends. The CDC collaborates with state and local health departments to investigate outbreaks, determine sources, and implement control measures.
Restaurants can play a significant role in the spread of foodborne illnesses like cyclosporiasis, especially if they serve contaminated produce. Health officials often investigate restaurants during outbreaks to identify sources of contamination. Proper food handling, hygiene practices, and employee training are essential for restaurants to prevent outbreaks and ensure food safety for customers.
Cyclospora is commonly linked to fresh produce, particularly items like salad greens, cilantro, and berries. Contaminated water used for irrigation or washing can introduce the parasite to these foods. Past outbreaks have highlighted specific produce items, such as raspberries from Guatemala and various salad mixes, as frequent sources of cyclospora infections.
Consumers can ensure food safety at home by practicing good hygiene, such as washing hands before food preparation. Washing fruits and vegetables thoroughly under running water, peeling or cooking produce when possible, and avoiding cross-contamination in the kitchen are key steps. Keeping food preparation areas clean and storing food at the correct temperatures also helps prevent foodborne illnesses.
Treatment for cyclosporiasis typically involves antibiotics, such as trimethoprim-sulfamethoxazole, which can help alleviate symptoms and eliminate the parasite from the body. Most people recover without treatment, but severe cases may require medical attention. Staying hydrated is essential, especially for those experiencing prolonged diarrhea, to prevent dehydration.
