Outbreak Scope and Demographics

Public health officials are tracking a multistate Salmonella outbreak involving four strains – Enteritidis, Indiana, London, and Mbandaka – linked to contact with backyard poultry. As of June 23, 2025, 187 infections have been reported across 42 states, resulting in 42 hospitalizations (30% of cases with available data) and one fatality in Illinois. Illness onset dates range from February 9 to May 31, 2025. Epidemiologic data indicate that 82% of patients (107 of 131 interviewed) reported contact with backyard poultry prior to symptom onset. Affected individuals span ages <1 to 86 years, with a median age of 36. Notably, 28% of cases involve children under 5 years, a demographic at heightened risk for severe complications.

Source Identification and Laborat

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