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Viruses
Volume 17
Issue 7
10.3390/v17070896
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Article

The First African Swine Fever Viruses Detected in Wild Boar in Hong Kong, 2021–2023

by
Karina W. S. Tam
1,*,
Candy C. Y. Lau
1,
Timothy T. L. Ng
1,
Sin Ming Ip
1,
Sin Fat Pun
1,
Amanda Corla
2,
Carrie Batten
2 and
Christopher J. Brackman
1
1
Agriculture, Fisheries and Conservation Department, The Government of the Hong Kong Special Administrative Region, Hong Kong SAR, China
2
The Pirbright Institute, Ash Road, Woking GU24 0NF, UK
*
Author to whom correspondence should be addressed.
Viruses 2025, 17(7), 896; https://doi.org/10.3390/v17070896 (registering DOI)
Submission received: 28 May 2025 / Revised: 20 June 2025 / Accepted: 24 June 2025 / Published: 25 June 2025
(This article belongs to the Collection African Swine Fever Virus (ASFV))
Versions Notes

Abstract

This study represents the first report on the detection and whole-genome sequencing of African swine fever (ASF) viruses in wild boar in Hong Kong in 2021–2023. Wild boar samples collected via an ASF surveillance program by the Agriculture, Fisheries, and Conservation Department were tested for ASF viruses (ASFVs) using real-time polymerase chain reaction. ASF-positive carcasses were detected in four cases and hemadsorption, virus isolation, and whole-genome sequencing were conducted. The B646L gene, E183L gene, central variable region within the B602L gene, intergenic region between the I73R and I329L genes, EP420R gene, and multigene family members of the four ASFV strains were compared. The whole-genome phylogenetic relationships were studied. The comparative analysis of the genomes indicates that the ASFVs in these four cases have genetic similarities to Asian genotype II ASFVs, but are genetically distinct from each other, as well as the ASFV previously identified in a domestic pig farm in Hong Kong in 2021.
Keywords: African swine fever; African swine fever virus; ASFV; wild boar; pig; full-length genome; genotype II; sequencing African swine fever; African swine fever virus; ASFV; wild boar; pig; full-length genome; genotype II; sequencing

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MDPI and ACS Style

Tam, K.W.S.; Lau, C.C.Y.; Ng, T.T.L.; Ip, S.M.; Pun, S.F.; Corla, A.; Batten, C.; Brackman, C.J. The First African Swine Fever Viruses Detected in Wild Boar in Hong Kong, 2021–2023. Viruses 2025, 17, 896. https://doi.org/10.3390/v17070896

AMA Style

Tam KWS, Lau CCY, Ng TTL, Ip SM, Pun SF, Corla A, Batten C, Brackman CJ. The First African Swine Fever Viruses Detected in Wild Boar in Hong Kong, 2021–2023. Viruses. 2025; 17(7):896. https://doi.org/10.3390/v17070896

Chicago/Turabian Style

Tam, Karina W. S., Candy C. Y. Lau, Timothy T. L. Ng, Sin Ming Ip, Sin Fat Pun, Amanda Corla, Carrie Batten, and Christopher J. Brackman. 2025. "The First African Swine Fever Viruses Detected in Wild Boar in Hong Kong, 2021–2023" Viruses 17, no. 7: 896. https://doi.org/10.3390/v17070896

APA Style

Tam, K. W. S., Lau, C. C. Y., Ng, T. T. L., Ip, S. M., Pun, S. F., Corla, A., Batten, C., & Brackman, C. J. (2025). The First African Swine Fever Viruses Detected in Wild Boar in Hong Kong, 2021–2023. Viruses, 17(7), 896. https://doi.org/10.3390/v17070896

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