4.4 Review

Airborne transmission of common swine viruses

期刊

PORCINE HEALTH MANAGEMENT
卷 9, 期 1, 页码 -

出版社

BMC
DOI: 10.1186/s40813-023-00346-6

关键词

Aerosol; Swine virus; Transmission distance; Experimental condition; Field condition; Influential factors; Preventive strategy

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This paper provides a comprehensive review of the transmission characteristics, influential factors, and preventive strategies of common swine viral aerosols. It discusses the potential risks of long-distance transmission and short-distance transmission for different viruses. Various factors including aerosol particle sizes, viral strains, host sensitivity, weather conditions, and environmental conditions influence the transmission of viral aerosols. The paper proposes preventive and control strategies such as early warning models, viral aerosol detection, and air pretreatment.
The transmission of viral aerosols poses a vulnerable aspect in the biosecurity measures aimed at preventing and controlling swine virus in pig production. Consequently, comprehending and mitigating the spread of aerosols holds paramount significance for the overall well-being of pig populations. This paper offers a comprehensive review of transmission characteristics, influential factors and preventive strategies of common swine viral aerosols. Firstly, certain viruses such as foot-and-mouth disease virus (FMDV), porcine reproductive and respiratory syndrome virus (PRRSV), influenza A viruses (IAV), porcine epidemic diarrhea virus (PEDV) and pseudorabies virus (PRV) have the potential to be transmitted over long distances (exceeding 150 m) through aerosols, thereby posing a substantial risk primarily to inter-farm transmission. Additionally, other viruses like classical swine fever virus (CSFV) and African swine fever virus (ASFV) can be transmitted over short distances (ranging from 0 to 150 m) through aerosols, posing a threat primarily to intra-farm transmission. Secondly, various significant factors, including aerosol particle sizes, viral strains, the host sensitivity to viruses, weather conditions, geographical conditions, as well as environmental conditions, exert a considerable influence on the transmission of viral aerosols. Researches on these factors serve as a foundation for the development of strategies to combat viral aerosol transmission in pig farms. Finally, we propose several preventive and control strategies that can be implemented in pig farms, primarily encompassing the implementation of early warning models, viral aerosol detection, and air pretreatment. This comprehensive review aims to provide a valuable reference for the formulation of efficient measures targeted at mitigating the transmission of viral aerosols among swine populations.

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