4 more states report cyclosporiasis outbreak. Here's how the FDA does a traceback investigation

The CDC has expanded its investigation into a cyclosporiasis outbreak, adding Illinois and four other states to the list of affected areas. This marks a second outbreak of the illness. In response, the FDA is conducting traceback investigations to identify the source of the foodborne illness. Experts are currently explaining the specific processes health officials use to track these infections and prevent further spread across the multiple states reporting cases of cyclosporiasis.