The Food and Drug Administration (FDA) and Centers for Disease Control and Prevention (CDC) are investigating a multistate outbreak of listeria monocytogenes infections connected to Fresh Express salads, the agency announced on Dec. 21.
Listeria monocytogenes is a food-borne illness that can cause short-term symptoms like high fever, severe headache, stiffness, nausea, abdominal pain, and diarrhea, as per the CDC.
