Vaccination programs for farm animals prevent infectious disease that causes suffering and death. Understanding available vaccines and welfare benefits helps farmers and policymakers prioritize prevention.
Vaccination is the most welfare-positive disease management intervention available in animal agriculture — preventing disease before it causes suffering rather than treating it after welfare is compromised. The cost-benefit analysis for most farm animal vaccines is strongly positive: the cost of vaccination is routinely lower than the cost of treating the disease it prevents, plus the welfare and productivity benefit from reduced disease incidence. Vaccine hesitancy in farm animal contexts is less common than in human medicine but barriers including cost, administration complexity, and perceived lack of need do reduce adoption below optimal levels.