Multistate Outbreak of Salmonella enterica Serovar Heidelberg with Unidentified Source, Australia, 2018–2019

Abstract

We report a multistate Salmonella enterica serovar Heidelberg outbreak in Australia during 2018–2019. Laboratory investigation of cases reported across 5 jurisdictions over a 7-month period could not identify a source of infection but detected indicators of severity and invasiveness. The hospitalization rate of 36% suggested a moderately severe clinical picture.

Keywords

• salmonella
• Australia
• epidemiology
• disease outbreaks
• antimicrobial resistance
• bacteria