The U.S. Department of Agriculture’s Food Safety and Inspection Service (USDA’s FSIS) has published an after-action review (AAR) for two Salmonella Newport outbreaks that occurred during 2016–2019. Salmonella Newport has been characterized as a reoccurring strain because it has caused repeated outbreaks of human illnesses with similar epidemiologic characteristics. The investigations were conducted in collaboration with the U.S. Centers for Disease Control and Prevention (CDC).
For the two outbreaks covered by the AAR, the first had 106 recorded illnesses and the second had 436 recorded illnesses. The first outbreak occurred from October 4, 2016–July 19, 2017, and the second outbreak occurred from August 5, 2018–February 17, 2019. The age ranges were similar for the two outbreaks, with median ages of 44 and 42 for the first and second outbreaks, respectively. The outbreaks occurred across 36 states, and a majority of the reported ill people lived in the U.S. Southwest.