Phylogenetic and evolutionary analysis of foot-and-mouth disease virus A/ASIA/Sea-97 lineage

• Published in: Virus genes 2021-10, Vol.57 (5), p.443-447
• Main Authors: Bae, Soyeon, Li, Vladimir, Hong, Juyong, Kim, Jin Nam, Kim, Heebal
• Format: Article
• Language: English
• Subjects: Amino acids; Animals; Antigens, Viral - genetics; Biomedical and Life Sciences; Biomedicine; Cattle; Cattle Diseases - genetics; Cattle Diseases - pathology; Cattle Diseases - virology; Disease Outbreaks; Divergence; Evolution; Foot & mouth disease; Foot-and-Mouth Disease - classification; Foot-and-Mouth Disease - genetics; Foot-and-Mouth Disease - virology; Foot-and-Mouth Disease Virus - classification; Foot-and-Mouth Disease Virus - genetics; Foot-and-Mouth Disease Virus - pathogenicity; Genetic diversity; Humans; Medical Microbiology; Phylogenetics; Phylogeny; Plant Sciences; Serogroup; Short Report; Thailand; Vaccines; Viral Vaccines - genetics; Virology; VP1 protein
• ISSN: 0920-8569; 1572-994X
• DOI: 10.1007/s11262-021-01848-7

Foot-and-mouth disease virus (FMDV) A/ASIA/Sea-97 is a predominant lineage in Southeast Asia and East Asia. However, Sea-97 lineage has not been well studied since its first outbreak in Thailand in 1997. Thus, we conducted phylogenetic and evolutionary analysis of Sea-97 using 224 VP1 sequences of FMDV A/ASIA during 1960 and 2018. Phylogenetic analysis revealed that Sea-97 lineage can be classified into five groups (G1–G5). After the emergence of G2 from G1, the genetic diversity of Sea-97 increased sharply, causing divergence into G3, G4 and G5. During this evolutionary process, Sea-97 lineage, which was initially found only in some countries in Southeast Asia, gradually spread to East Asia. The evolution rate of this lineage was estimated to be 1.2 × 10 –2 substitutions/site/year and there were many differences in amino acid residues compared to vaccine strain. Substitutions at antigenically important sites may affect the efficacy of the vaccine, suggesting the need for appropriate vaccine strains. Our results could provide meaningful information to understand comprehensive characteristic of Sea-97 lineage.