Genetic Variation Analysis of the NSP1 Gene of Type 2 Porcine Reproductive and Respiratory Syndrome Virus in China
Background/Objectives: Porcine reproductive and respiratory syndrome virus type 2 (PRRSV-2) remains the predominant genotype circulating in China and continues to evolve through mutation and recombination. Although NSP1 is recognized as a multifunctional nonstructural protein involved in immune regulation, its genetic...