Genetic Profile of African Swine Fever Viruses Circulating at Pig Farms in South Korea during the Outbreaks between 2022 and April 2023

Autor: Ki-Hyun Cho, Dae-Sung Yoo, Seong-Keun Hong, Da-Young Kim, Min-Kyung Jang, Hae-Eun Kang, Yeon-Hee Kim
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Viruses, Vol 15, Iss 7, p 1552 (2023)
Druh dokumentu: article
ISSN: 1999-4915
DOI: 10.3390/v15071552
Popis: Fifteen pig farms were affected by African swine fever (ASF) in South Korea during the outbreaks between 2022 and April 2023. The ASF virus (ASFV) genome was directly extracted from the blood and tissue samples of 15 ASFV-positive pig farms to analyze the genetic characteristics. Phylogenetic analysis revealed that the 15 strains belonged to p72 genotype II and CD2v serogroup 8, which were the central variable region (CVR) I variants of the B602L gene. Fourteen strains were intergenic region (IGR) II variants, containing an additional tandem repeat sequence (TRS), between I73L and I329R, with the exception of one strain from an ASFV-infected pig farm reported on 22 January 2023, which was an IGR I variant. In addition, a single-nucleotide polymorphism (SNP) was detected at position 107 from the start of the IGR between A179L and A137R in six isolates. The findings of this study suggest that the sources of the virus at the pig farms from which these variants originated differed from those of other pig farms.
Databáze: Directory of Open Access Journals
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