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

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.