The agency's announcement on Wednesday adds to the growing number of cyclosporiasis cases reported across the US Midwest, including Michigan and four other states.

Cases of cyclosporiasis have topped 11,500 in 41 states, according to data from the Centers for Disease Control and Prevention on Wednesday.

As cases of cyclosporiasis are continuing to increase across the U.S., here's what we still don't know about a multi-state outbreak.

Infections caused by the parasite have led to more than 300 hospitalizations since May

Officials have not yet identified the source of the latest outbreak but said they have begun traceback efforts.