Health officials are investigating a rise in cases of a gastrointestinal illness. The illness is caused by a parasite and has led to hospitalizations nationwide. At least 20 people have been hospitalized so far.

The parasite is known to spread through contaminated food. Fresh produce is a common source of the infection.

Further details about the outbreak are available from the US Centers for Disease Control and Prevention, which is tracking the source of the parasite. The increase in cases has been reported in multiple states, including Michigan, since May.