Health officials are warning about an outbreak of a microscopic parasite that is commonly linked to fresh produce and is causing major gastrointestinal problems for hundreds of people. The parasite, known as cyclospora, has been behind a parasitic outbreak affecting multiple states, prompting officials to alert the public to the symptoms and to steps people can take to protect themselves.
According to the Michigan Department of Health and Human Services, about 708 people in the state have been sickened so far. At least 20 people have been sent to the hospital, and officials say the number of cases has been on the rise since May, making it a significant and growing concern for public health authorities.
Cyclospora spreads when a person consumes food or drinks water that has been contaminated with the parasite. Because of that, fresh produce that is eaten raw has been a common thread in outbreaks of this kind, and health officials have focused their attention on the food supply as they work to understand what is driving the current surge.
Investigators say outbreaks like this can be difficult to trace back to a single product. Cyclospora is tricky in part because of its longer incubation period, meaning people may not fall ill until well after they were exposed, which complicates efforts to pin down exactly what they ate or drank.
The way some produce is handled adds another layer of difficulty. A single bagged, ready-made salad, for example, can be sourced from four, five or even six different farms. That means a product many shoppers rely on for convenience can draw from multiple suppliers, making it harder to identify a single point where contamination may have occurred.
For now, officials are urging the public to be aware of the symptoms and to take precautions as the investigation continues. With cases still climbing and the source not yet pinned down, health authorities are treating the outbreak as a serious situation and are continuing to track its spread across the affected states.