Hidden Spread of Rare Salmonella Serovars Isolated from Healthy Individuals - Yulin City, Guangxi Zhuang Autonomous Region, China, 2013-2022

Yao Peng; Mengyu Wang; Changyu Zhou; Zhenpeng Li; Zhe Li; Yuan Zhang; Biao Kan; Ming Luo; Xin Lu

doi:10.46234/ccdcw2024.248

Hidden Spread of Rare Salmonella Serovars Isolated from Healthy Individuals - Yulin City, Guangxi Zhuang Autonomous Region, China, 2013-2022

China CDC Wkly. 2024 Nov 22;6(47):1236-1241. doi: 10.46234/ccdcw2024.248.

Authors

Yao Peng¹, Mengyu Wang^{1

2}, Changyu Zhou³, Zhenpeng Li¹, Zhe Li¹, Yuan Zhang¹, Biao Kan¹, Ming Luo³, Xin Lu¹

Affiliations

¹ National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.
² School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan City, Shandong Province, China.
³ Yulin Center for Disease Control and Prevention, Yulin City, Guangxi Zhuang Autonomous Region, China.

Abstract

What is already known about this topic?: The emergence of rare multidrug-resistant Salmonella serovars is increasingly common in developing countries, posing a significant public health risk.

What is added by this report?: This report identified five rare Salmonella serovars in China for the first time and using whole-genome sequencing, identified their hidden spread among healthy individuals. Additionally, antibiotic resistance genes and virulence genes were identified.

What are the implications for public health practice?: Healthy individuals, especially food handlers, may be sources of hidden Salmonella dissemination. Therefore, monitoring Salmonella prevalence in healthy individuals is important for understanding and managing the risks of foodborne illness.

Keywords: Healthy individuals; Hidden spread; Rare Salmonella.

Grants and funding

Supported by the National Key Research and Development Program of China (2022YFC2303900), and the Major Projects of the National Natural Science Foundation of China (22193064)