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Updated: Jan 20, 2026

Characterizing Salmonella Typhimurium-induced Septic Peritonitis in Mice
Published on: July 29, 2022
Traditional Salmonella Typhimurium typing tools (phage typing and MLVA) are sufficient to resolve well-defined
Helen Kathleen Crabb1, Joanne Lee Allen1, Joanne Maree Devlin1
1Asia-Pacific Centre for Animal Health, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Science, The University of Melbourne, Victoria, Australia, 3010.
Abstract:
Between 1991 and 2014 the per capita notification rate of salmonellosis in Australia increased from 31.9 to 69.7 cases per 100,000 people. Salmonella Typhimurium accounted for nearly half the human cases until the end of 2014. In this study, we used cluster analysis tools to compare S. Typhimurium isolates from a chicken-meat study with those reported to the National Enteric Pathogen Surveillance System (NEPSS) from the coincident human and non-human populations. There was limited phage type diversity within all populations and a lack of specificity of MLVA profiling within phage types. The chicken-meat study isolates were not significantly clustered with the human cases and at least 7 non-human sources, based on typing profiles (PT/MLVA combination), could be implicated as a source of human cases during the same period. In the absence of a strong surveillance system representative of all putative sources, MLVA and phage typing alone or in combination are insufficient to identify the source of human cases.
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