The number of victims in the national outbreak of the food-linked diarrheal disease cyclospora rose to 397, with illnesses reported in 16 states, the Centers for Disease Control and Prevention reported late Wednesday. STORY: Experts: Health risks higher from packaged greens 
 
 Cyclospora is an intestinal illnesses caused by the microscopic parasite Cyclospora cayetanensis. It is transmitted when feces enter the food or water supply and are consumed. He is "a good, good, good microbiologist," said Patricia Quinlisk, Iowa's state epidemiologist. Morning Rounds with Dr. LaPook: Staying safe from cyclospora outbreak 
 
 Iowa officials also said a prepackaged salad mix is to blame, but neither state is naming the company or companies involved. "When we look at the data from other states, the people who are getting ill are not necessarily the same as we saw; they're not getting sick at the same time." "I think that we should know where the food came from," she said.
– The cyclospora outbreak, believe to be linked to prepackaged salad in Iowa and Nebraska, just got a little ickier: Experts say that salad may not be the sole source of the stomach bug, which causes "sometimes explosive diarrhea"and has now sickened a confirmed 397 people across 16 states as of Wednesday, according to the Centers for Disease Control and Prevention. Indeed, Iowa's state epidemiologist tells USA Today that the "epidemiology looks a bit different" in other affected states. "The people who are getting ill are not necessarily the same as we saw; they're not getting sick at the same time." The FDA says it "can't speak to an ongoing investigation," though CBS News reports the FDA and CDC are "getting closer" to IDing the source. (CBS points out that even if the salad is to blame, the true root of the illness could be the plant that processed the lettuce, for instance.) Says the VP of a produce trade group, "I think the investigation has a long way to go." If you want a first-hand account of what cyclospora is like, CBS talks to a Texas woman who had diarrhea "for weeks."