Preventing infectious disease in cats through vaccination, testing, and biosecurity is one of the most impactful welfare interventions available to cat owners.
Infectious disease prevention is a foundational welfare intervention for cats because the diseases prevented — feline distemper, herpesvirus, FeLV — cause significant suffering that is largely preventable. The transformation of FIP from a universally fatal disease to a treatable condition through antiviral medication is one of the most significant recent advances in feline welfare. Vaccination, testing, and appropriate isolation of new cats in multi-cat households protect both individual animals and entire populations. The welfare calculus is clear: the minor stress of annual veterinary visits is massively outweighed by the prevention of diseases that cause weeks or months of suffering, often ending in death. Proactive preventive care is an expression of genuine responsibility for companion animal welfare.