Suvaxyn PRRS MLV (porcine respiratory and reproductive syndrome virus vaccine (live)) is used to protect pigs against Porcine Reproductive and Respiratory Syndrome (PRRS). It is a modified live virus vaccine that helps reduce viremia and nasal shedding caused by the PRRS virus, especially in environments contaminated with European strains. Reduces the impact of the disease in infected herds, and is particularly effective in young piglets.