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.

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.

The FDA is investigating at least five other clusters of cyclosporiasis, including an outbreak of 72 cases reported by the agency on Wednesday.

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.