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. 2020 Aug 10;17(16):5774.
doi: 10.3390/ijerph17165774.

Distribution of Salmonella Serovars in Humans, Foods, Farm Animals and Environment, Companion and Wildlife Animals in Singapore

Kyaw Thu Aung  1   2   3   4 , Wei Ching Khor  1 , Sophie Octavia  5 , Agnes Ye  1 , Justina Leo  1 , Pei Pei Chan  6 , Georgina Lim  6 , Wai Kwan Wong  7 , Brian Zi Yan Tan  7 , Joergen Schlundt  2   3 , Anders Dalsgaard  2   3   8 , Lee Ching Ng  4   9 , Yueh Nuo Lin  10
Affiliations

Distribution of Salmonella Serovars in Humans, Foods, Farm Animals and Environment, Companion and Wildlife Animals in Singapore

Kyaw Thu Aung et al. Int J Environ Res Public Health. .

Abstract

We analyzed the epidemiological distribution of Salmonella serovars in humans, foods, animals and the environment as a One-Health step towards identifying risk factors for human salmonellosis. Throughout the 2012-2016 period, Salmonella ser. Enteritidis was consistently the predominating serovar attributing to >20.0% of isolates in humans. Other most common serovars in humans include Salmonella ser. Stanley, Salmonella ser. Weltevreden, Salmonella ser. Typhimurium and Salmonella ser. 4,5,12:b:-(dT+). S. Enteritidis was also the most frequent serovar found among the isolates from chicken/chicken products (28.5%) and eggs/egg products (61.5%) during the same period. In contrast, S. Typhimurium (35.2%) and Salmonella ser. Derby (18.8%) were prevalent in pork/pork products. S. Weltevreden was more frequent in seafood (19.2%) than others (≤3.0%). Most isolates (>80.0%) from farms, companion and wildlife animals belonged to serovars other than S. Enteritidis or S. Typhimurium. Findings demonstrate the significance of a One-Health investigative approach to understand the epidemiology Salmonella for more effective and integrated surveillance systems.

Keywords: One-Health; Salmonella; animals; foods; humans; serovar distribution.

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Conflict of interest statement

The authors declare no conflict of interest.

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