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Transmission of livestock-associated methicillin-resistant Staphylococcus aureus between animals, environment, and humans in the farm

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Abstract

Staphylococcus aureus (S. aureus) is a fearsome bacterial pathogen that can colonize and infect humans and animals. Depending on the different sources, MRSA is classified as hospital-associated methicillin-resistant S. aureus (HA-MRSA), community-associated MRSA (CA-MRSA), and livestock-associated MRSA (LA-MRSA). LA-MRSA is initially associated with livestock, and clonal complexes (CCs) were almost always 398. However, the continued development of animal husbandry, globalization, and the widespread use of antibiotics have increased the spread of LA-MRSA among humans, livestock, and the environment, and other clonal complexes such as CC9, CC5, and CC8 have gradually emerged in various countries. This may be due to frequent host switching between humans and animals, as well as between animals. Host-switching is typically followed by subsequent adaptation through acquisition and/or loss of mobile genetic elements (MGEs) such as phages, pathogenicity islands, and plasmids as well as further host-specific mutations allowing it to expand into new host populations. This review aimed to provide an overview of the transmission characteristics of S. aureus in humans, animals, and farm environments, and also to describe the main prevalent clones of LA-MRSA and the changes in MGEs during host switching.

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Acknowledgements

We thank the reviewers and editors for the constructive comments or help.

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The funder has no role in the preparation of manuscript and decision to submission.

Funding

This work was supported by grants from the National Natural Science Foundation of China (grant number 81973105 and 82273696).

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All authors contributed to the study conception and design. Conceptualization, Ying Wang, Peihua Zhang and Haiyan Yang; methodology, Ying Wang, Peihua Zhang and Shuaiyin Chen; software, Peihua Zhang and Jian Wu; writing-original draft preparation, Ying Wang and Peihua Zhang; writing-review and editing, Ying Wang, Jian Wu and Haiyan Yang; visualization, Ying Wang, Peihua Zhang, Yuefei Jin and Jinzhao Long; supervision, Haiyan Yang and Guangcai Duan; project administration, Haiyan Yang; funding acquisition, Haiyan Yang.

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Correspondence to Haiyan Yang.

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The final version of the manuscript was reviewed and approved by all authors.

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The authors declare no competing interests.

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Responsible Editor: Robert Duran

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Ying Wang and Peihua Zhang contributed equally to this work.

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Wang, ., Zhang, P., Wu, J. et al. Transmission of livestock-associated methicillin-resistant Staphylococcus aureus between animals, environment, and humans in the farm. Environ Sci Pollut Res 30, 86521–86539 (2023). https://doi.org/10.1007/s11356-023-28532-7

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  • DOI: https://doi.org/10.1007/s11356-023-28532-7

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