Farm Animal Welfare

Pig PRRS Vaccine Welfare Reduction

PRRS vaccination reduces disease severity and reproductive losses. Understanding vaccination strategies helps implement effective protection.

Key Facts

Modified live PRRS vaccines provide better protection than killed vaccines
Vaccination of gilts before introduction reduces reproductive loss from naive exposure
Herd stability programs eliminate PRRS virus from endemic herds
Mass vaccination stabilizes herds during active outbreaks
PRRS vaccination does not protect against all circulating strains

Welfare Considerations

Pigs in herds without PRRS vaccination programs face preventable disease - respiratory infection, immune suppression, and reproductive failure in sows. Vaccination that establishes herd immunity significantly reduces the incidence and severity of PRRS-associated welfare harm. Strategic vaccination, combined with biosecurity, is the most effective approach to PRRS welfare management.

What You Can Do

Implement PRRS vaccination programs appropriate to herd status
Work with a pig vet on herd stability and PRRS control strategy
Support research into improved PRRS vaccine coverage of diverse strains
Advocate for PRRS status transparency and control in pig supply chains