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Increasing Incidence of Salmonella in Australia, 2000-2013

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journal contribution
posted on 2023-05-19, 13:12 authored by Ford, L, Glass, K, Veitch, M, Wardell, R, Polkinghorne, B, Dobbins, T, Lal, A, Kirk, MD
Salmonella is a key cause of foodborne gastroenteritis in Australia and case numbers are increasing. We used negative binomial regression to analyze national surveillance data for 2000–2013, for Salmonella Typhimurium and non-Typhimurium Salmonella serovars. We estimated incidence rate ratios adjusted for sex and age to show trends over time. Almost all states and territories had significantly increasing trends of reported infection for S. Typhimurium, with states and territories reporting annual increases as high as 12% (95% confidence interval 10–14%) for S. Typhimurium in the Australian Capital Territory and 6% (95% CI 5–7%) for non-Typhimurium Salmonella in Victoria. S. Typhimurium notification rates were higher than non-Typhimurium Salmonella rates in most age groups in the south eastern states of Australia, while non-Typhimurium rates were higher in most age groups elsewhere. The S. Typhimurium notification rate peaked at 12–23 months of age and the non-Typhimurium Salmonella notification rate peaked at 0–11 months of age. The age-specific pattern of S. Typhimurium cases suggests a foodborne origin, while the age and geographic pattern for non-Typhimurium may indicate that other transmission routes play a key role for these serovars.

History

Publication title

PloS One

Volume

11

Issue

10

Article number

e0163989

Number

e0163989

Pagination

1-11

ISSN

1932-6203

Department/School

Tasmanian School of Medicine

Publisher

Public Library of Science

Place of publication

United States

Rights statement

Copyright 2016 Ford et al. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

Repository Status

  • Open

Socio-economic Objectives

Clinical health not elsewhere classified

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