What to know about the cyclosporiasis outbreak hitting more than half of U.S. states

A surge of cases of the intestinal illness that causes diarrhea and nausea has been detected in 31 states, according to federal health authorities, but the source is still under investigation. A surge of cases of the intestinal illness that causes diarrhea and nausea has been detected in 31 states, according to federal health authorities, but the source is still under investigation.