Test results create confusion around cyclosporiasis outbreak

Federal officials are still trying to determine the source of a multistate outbreak linked to lettuce.

There may be more than 7,000 cases of cyclosporiasis nationwide.

The FDA said that a lettuce sample from Taylor Farms that was initially reported as positive for cyclospora was actually a false positive.

William Brangham discussed more with Dr.

Katelyn Jetelina of Your Local Epidemiologist. ...