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An Allelotyping PCR for Identifying Salmonella enterica serovars Enteritidis, Hadar, Heidelberg, and Typhimurium
Published on: July 22, 2011
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Heatwaves differentially affect risk of Salmonella serotypes
Adriana Milazzo1, Lynne C Giles1, Ying Zhang2
1School of Public Health, The University of Adelaide, Adelaide, 5000, South Australia, Australia.
The Journal of Infection
|June 19, 2016
Summary
Heatwaves significantly increase salmonellosis risk, particularly Salmonella typhimurium. Higher heatwave intensity raises infection risk, with effects seen up to 14 days later, informing public health strategies.
Area of Science:
- Environmental Health
- Infectious Disease Epidemiology
- Public Health
Background:
- Rising global temperatures and increased frequency of heatwaves pose significant public health challenges.
- Foodborne illnesses, such as salmonellosis, are a growing concern, with potential links to environmental factors.
Purpose of the Study:
- To investigate the association between heatwaves and salmonellosis incidence in Adelaide, Australia.
- To determine the impact of heatwave intensity, duration, and timing on salmonellosis and specific serotypes.
- To explore the delayed effects of heatwave temperatures on Salmonella cases.
Main Methods:
- Utilized Poisson regression with Generalised Estimating Equations for statistical analysis.
- Employed Distributed Lag Non-linear Models to assess non-linear and delayed temperature effects.
- Analyzed salmonellosis notification data from 1990 to 2012.
Main Results:
- Salmonella typhimurium PT135 notifications showed a twofold increase during heatwaves.
- Increased heatwave intensity (>41°C) correlated with a 34% rise in overall salmonellosis risk.
- Significant temperature effects on Salmonella cases and serotypes were observed up to 14 days after heatwaves.
Conclusions:
- Heatwaves demonstrably impact Salmonella cases, including specific serotypes and phage types.
- Findings provide crucial insights into the relationship between extreme heat and foodborne illness.
- This research supports the development of targeted public health interventions to mitigate heatwave-related salmonellosis outbreaks.
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