Genetic evolution analysis of PRRSV ORF5 gene in five provinces of Northern China in 2024.

ABSTRACT:

Background

Porcine reproductive and respiratory syndrome (PRRS) was first discovered in North America in 1987, and since then it has been spread widely all over the world. The prevalence of PRRS has caused significantly economic losses to pig industry in many countries.

Objectives

Investigate the prevalence and genetic evolution of porcine reproductive and respiratory syndrome virus (PRRSV) in five provinces of northern China.

Methods

190 samples suspected of PRRS were collected from 28 pig farms in five provinces of northern China. The PRRSV ORF7 and ORF5 gene were detected by RT-PCR, and the ORF5 gene were sequenced for the homology and genetic evolution analysis.

Results

The positive samples of ORF7 gene were 50, and its positive rate was 26.32%. The positiv

SUBMITTER: Jian Y 

PROVIDER: S-EPMC11966811 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature