Infectious diseases cause significant suffering in cats. Understanding the vaccination and lifestyle options that prevent them is fundamental to responsible cat ownership.
Infectious disease prevention through vaccination is one of the most welfare-positive investments in companion cat ownership. Feline panleukopenia causes devastating systemic disease — severe vomiting, haemorrhagic diarrhoea, and immune devastation — in unvaccinated cats that contract it. Herpesvirus causes recurrent upper respiratory flare-ups throughout a cat's life once infected. The pain and discomfort of these infections is preventable through reliable vaccination. The indoor versus outdoor decision also significantly affects infectious disease risk — indoor-only cats face substantially lower exposure to FIV, FeLV, and upper respiratory infections. Balancing infectious disease risk against the welfare benefits of outdoor access requires honest assessment of local disease prevalence and the individual cat's risk tolerance.