Phylogenetic analysis of emerging infectious diseases in pigs and cattle during 2019-2022 in Vietnam

다국어 초록 (Multilingual Abstract)

This work was conducted to review the phylogenetic of emerging viral infectious diseases in pigs and cattle during 2019- 2022 in Vietnam. Among of viral diseases in pigs, African swine fever (ASF) has caused the significantly economical lost. Analysis of the C-terminal end of p72 revealed that the ASFV strains in Vietnam belongs to genotype II, serogroup 8. The ORF5 sequence of the nineteen porcine reproductive and respiratory syndrome virus (PRRSV) isolates belonged to genotype 2. Among them, thirteen isolates belonged to lineage 8, together with the vaccine strain JAX1-R and isolates from Vietnam and China. One isolate was clustered into lineage 1 with isolates from Thailand. Phylogenetic analysis of porcine circovirus type 2 (PCV2) ORF2 from forty-three positive clinical samples showed that five isolates belonged to PCV2b and thirty-eight isolates belonged to PCV2d. A lumpy skin disease virus (LSDV) isolated in the first outbreak in Vietnam was 100% identical to viruses isolated in China (2019) based on the p32 and RP030 genes. These new findings are important for vaccine development to control these diseases in Vietnam.