If there was one word you wouldn’t want to hear in front of the word “diarrhea,” it’d be “explosive.” Unfortunately, it’s a combination that some Americans are personally experiencing right now, thanks to ongoing outbreaks of a parasitic foodborne disease called cyclosporiasis. According to the Centers for the Disease Control and Prevention, there have been nearly 150 cases of cyclosporiasis reported across 17 states since early May, with close to two dozen people needing hospitalization as a result. The true toll of cases is almost certainly higher, though, and no clear food source behind these outbreaks has been identified as of yet. Loud and explosive Cyclosporiasis is caused by various species of the microscopic parasite Cyclospora, though it’s predominantly Cyclospora cayatenensis.

It usually takes about a week to feel sick after being infected, and the main symptom of cyclosporiasis, according to the Cleveland Clinic, is “loud, watery (explosive) diarrhea.” Joy. The infection can also cause fatigue, loss of appetite, and vomiting, though some people infected with the parasite are fortunate enough to avoid any symptoms at all. People generally feel better after a week or two without the need for treatment, though symptoms can last up to a month. The infection is rarely fatal, though people with weakened immune systems are more vulnerable to severe illness.