Key result
Whole-genome sequencing of four African swine fever virus cases in Hong Kong wild boar revealed genetic similarities to Asian genotype II ASFVs but distinct genetic profiles from each other.
Observational (n=4)
This study provides the first report and whole-genome sequencing of African swine fever viruses in wild boar in Hong Kong, revealing genetic diversity among the detected strains.
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.
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Tam et al. (2025) conducted an observational in African swine fever (ASF) (n=4). Whole-genome sequencing was evaluated on Detection and genetic characterization of ASF viruses. Whole-genome sequencing of four African swine fever virus cases in Hong Kong wild boar revealed genetic similarities to Asian genotype II ASFVs but distinct genetic profiles from each other.
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