In October 2022, CDC, public health and regulatory officials in several states, and the US FDA investigated an outbreak of Salmonella Litchfield infections. Epidemiologic, laboratory, and traceback data showed that fresh fish sold to restaurants by Mariscos Bahia, Inc. was the likely source of the outbreak. As of October 19, 2022, a total of 33 people infected with the outbreak strain of Salmonella Litchfield had been reported from 3 states. Illnesses started on dates ranging from June 14, 2022, to September 18, 2022. Of 26 people with information available, 13 had been hospitalized. No deaths were reported.

State and local public health officials interviewed people about the foods they ate in the week before they got sick. Of the 16 people interviewed, 12 (75%) reported eating raw fish, sushi or poke. This percentage was significantly higher than the 7.9% of respondents who reported eating raw fish in the FoodNet Population Survey. Several ill people in the outbreak were identified as part of three illness clusters at restaurants.

FDA collected an environmental sample that included multiple swabs at Mariscos Bahia, Inc., in Pico Rivera, California. Salmonella was identified from multiple environmental swabs collected at the facility and WGS analysis is ongoing. WGS completed to date indicates that Salmonella detected in at least one of the swabs from the facility is the outbreak strain.