Epidemiology and Pathogenicity Analysis Based on Partial Recombinant PRRSV Strains in China.

ABSTRACT: Currently, multiple recombinant variants of porcine reproductive and respiratory syndrome virus (PRRSV) are circulating in China. These variants exhibit differences in pathogenicity. To comprehensively understand the current status of the virus and its recombination patterns, a total of 677 PRRSV strains were used for evolutionary analysis, of which 673 strains were isolated from mainland China. The results indicated that current PRRSV strains in circulation in China are highly complex, with NADC30-like strains having replaced highly pathogenic strain of PRRSV (HP-PRRSV) strains as the dominant strains. An analysis of the patterns and hotspots of PRRSV-2 recombinant strains from 2019 to 2023 revealed two main types: the strains with NADC30 as the primary parent were observed to have recomb

SUBMITTER: You S 

PROVIDER: S-EPMC12367394 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature