A parasite outbreak causing severe diarrhea is being investigated by the CDC, with reports of over 1,000 cases in the US. The outbreak has been reported in 18 states, with some sources specifying that the parasite, possibly cyclosporiasis, may be linked to fresh produce. The number of people sickened has been reported as over 1,000 by some outlets, while others state that more than 1,200 people have been affected.