Our findings confirm that NADC30-like strains constitute the predominant lineage circulating in Sichuan Province, with co-circulation of JXA1-like and strains with potential recombination signatures inferred from phylogenetic clustering. The prevalence of frequent mutations within GP5 antigenic regions underscores the substantial genetic diversity of PRRSV. These results emphasize the critical need for sustained molecular surveillance and the development of updated vaccines to effectively manage PRRS outbreaks in the region.
Yu et al. (Wed,) studied this question.