Parasitic infection, cyclosporiasis, cases reported in NC

A "large and growing" outbreak of a parasitic infection is spreading health officials are warning.

As of Thursday, more than 300 cases of cyclosporiasis, an intestinal infection, have been confirmed, the Michigan Department of Health and Human Services (MDHHS) told ABC News. Typically, the state only sees about 50 cases per year, according to MDHHS.

The parasite usually spreads through food or water contaminated with feces, according to the Centers for Disease Control and Prevention (CDC).

"We are working closely with our state and local partners to identify the source of this outbreak that is making so many people ill as quickly as possible," Lynn Sutfin, public information officer for MDHHS, told ABC News.

The outbreak comes as the CDC reports cases 17 states including North Carolina.