Infectious Diseases 2022

Infectious Diseases 2022

Salmonellosis in Australia 2020

Communicable Diseases Intelligence - https://doi.org/10.33321/cdi.2022.46.2 31 January, 2022

More than seventy per cent of salmonellosis in Australia is thought to be due to contaminated food.
Rates of salmonellosis vary across the Australian states and territories, with the highest rates in the Northern Territory.
In 2020, to control coronavirus disease 2019 (COVID-19), Australia implemented public health measures including border closures, physical distancing and hygiene advice. A new study analyses salmonellosis notification rates in 2020 and considers possible impacts of COVID-19 measures.
Results: The five-year median number of annual salmonellosis notifications for 2015 to 2019 in Australia was 16,375 (range: 14,146–18,009 notifications per year). In 2020, there were 12,033 salmonellosis notifications in Australia, a 27% reduction on the five-year median and 15% lower than the 2015–2019 five-year minimum. The reduction in salmonellosis rate varied throughout Australia. States and territories with more stringent, more frequent or longer COVID-19 public health measures had generally greater salmonellosis rate reductions. However, Tasmania had a 50% deeper reduction in salmonellosis rate than did the Northern Territory, despite similar restriction levels.
Conclusions: Salmonellosis notifications decreased in Australia during the global COVID-19 pandemic. The reduction in notifications corresponded with the implementation of public health measures. Persistence of high rates in the Northern Territory could indicate the overarching importance of demographic and environmental factors.