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Porcine epidemic diarrhea virus: an update overview of virus epidemiology, vaccines, and control strategies in South Korea.

Authors :
Guehwan Jang
Duri Lee
Sangjune Shin
Jeonggyo Lim
Hokeun Won
Youngjoon Eo
Cheol-Ho Kim
Changhee Lee
Source :
Journal of Veterinary Science; Jul2023, Vol. 24 Issue 4, p1-25, 25p
Publication Year :
2023

Abstract

Porcine epidemic diarrhea virus (PEDV) has posed significant financial threats to the domestic pig industry over the last three decades in South Korea. PEDV infection will mostly result in endemic persistence in the affected farrow-to-finish (FTF) herds, leading to endemic porcine epidemic diarrhea (PED) followed by year-round recurrent outbreaks. This review aims to encourage collaboration among swine producers, veterinarians, and researchers to offer answers that strengthen our understanding of PEDV in efforts to prevent and control endemic PED and to prepare for the next epidemics or pandemics. We found that collaboratively implementing a PED risk assessment and customized four-pillar-based control measures is vital to interrupt the chain of endemic PED in affected herds: the former can identify on-farm risk factors while the latter aims to compensate for or improve weaknesses via herd immunity stabilization and virus elimination. Under endemic PED, long-term virus survival in slurry and asymptomatically infected gilts (“Trojan Pigs”) that can transmit the virus to farrowing houses are key challenges for PEDV eradication in FTF farms and highlight the necessity for active monitoring and surveillance of the virus in herds and their environments. This paper underlines the current knowledge of molecular epidemiology and commercially available vaccines, as well as the risk assessment and customized strategies to control PEDV. The intervention measures for stabilizing herd immunity and eliminating virus circulation may be the cornerstone of establishing regional or national PED eradication programs. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
1229845X
Volume :
24
Issue :
4
Database :
Supplemental Index
Journal :
Journal of Veterinary Science
Publication Type :
Academic Journal
Accession number :
169735349
Full Text :
https://doi.org/10.4142/jvs.23090