The CDC and public health officials in several states are collecting data to investigate a multistate outbreak of Salmonella Mbandaka infections in backyard poultry. As of April 24, a total of 7 people were reported to be infected with the outbreak strain of Salmonella Mbandaka in 6 states. Illnesses started on dates ranging from February 9, 2025, to March 24, 2025. Of the 7 people with information about animal contact, 5 (71%) reported contact with backyard poultry before getting sick. Of 4 people with information available, 2 (50%) reported purchasing or obtaining poultry before getting sick. People reported obtaining poultry from agricultural retail stores. Investigators continue to collect information about where sick people obtained poultry and what hatcheries supplied the retail stores from purchased poultry. This outbreak strain has been linked to two hatcheries in past outbreaks, including one which is also linked to the poultry shipping material sample in the current outbreak. WGS showed that bacteria from sick people's samples are closely related genetically. WGS of bacteria from 6 people's samples and one environmental sample did not predict resistance to any antibiotics. One person's sample predicted resistance to gentamicin, streptomycin, and tetracycline. @ https://www.cdc.gov/salmonella/outbreaks/mbandaka-05-01/investigation.html
