Story highlights Illnesses have been reported in 15 states

Cyclosporiasis can be treated with antibiotics

(CNN) Federal health officials reported Thursday an additional 109 cases of cyclospora infection in an ongoing outbreak linked to McDonald's salads that began in May.

The total number of laboratory-confirmed illnesses from this outbreak is now 395, according to a statement from the US Food and Drug Administration. At least 16 of the sick individuals have been hospitalized.

The cyclospora parasite causes intestinal illness in people who consumed contaminated food or water. Symptoms can begin a week or more after consuming the parasite. They include diarrhea and frequent, sometimes explosive bowel movements, according to the Centers for Disease Control and Prevention. Those who are infected might also experience loss of appetite, weight loss, stomach cramps or pain, nausea, gas and fatigue. Vomiting, headache, fever, body aches and flu-like symptoms can also occur.

The illness can last a few days to a few months, and patients might feel better but then get worse again. Cyclosporiasis can be treated with antibiotics.

Illnesses have been reported in 15 states: Connecticut, Florida, Iowa, Illinois, Indiana, Kentucky, Michigan, Minnesota, Montana, Nebraska, Ohio, South Dakota, Tennessee, Virginia and Wisconsin. However, the patients in Connecticut, Michigan, Tennessee and Virginia bought their salads in Illinois while traveling, and the Florida patient bought the salad in Kentucky.

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