Vaccination prevents infectious diseases that cause severe welfare harm in companion animals — evidence-based vaccination protocols.
Companion animal vaccination is one of the most direct welfare interventions available to pet owners — preventing diseases that cause profound suffering and death in unvaccinated animals. The welfare cost of parvovirus in an unvaccinated puppy is severe: days of painful illness with high mortality even with intensive treatment. The welfare benefit of a single vaccination series that prevents this fate is correspondingly enormous. Modern vaccination protocols that reflect evidence about immunity duration — using triennial boosters for core vaccines rather than annual revaccination — simultaneously maintain protection and reduce unnecessary needle stress. The goal is appropriate immunity at minimum stress.