Thousands of people around the U.S. have been sickened by a parasite that causes explosive diarrhea. Here's how many cases there are in Pennsylvania.

One of the nation’s largest outbreaks of cyclosporiasis, a parasitic disease that can cause debilitating diarrhea, has grown to more than 1,500 cases in Michigan alone, with federal officials reportin...

Cases of the largely seasonal sickness reached at least 843 people across 31 states as of July 9, according to CDC numbers, and over 1,000 when separate state-reported data is counted.