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Which diseases does the FVRCP vaccine protect cats against?

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Young boy in a red shirt smiles while hugging a fluffy tabby cat, their faces close together. — cats as pets A boy hugging a pet cat.

The FVRCP vaccine is a core combination injection that protects cats against three specific viral diseases:1

Feline viral rhinotracheitis (FVR/FHV-1): A highly contagious respiratory disease that frequently causes upper respiratory infections and conjunctivitis.2
Feline calicivirus (FCV): A viral disease that causes upper respiratory infections and can lead to fatal pneumonia, particularly in kittens.2
Feline panleukopenia (FPV): Often referred to as feline distemper, this is a highly contagious and often fatal parvovirus.2

Vaccination is considered a critical protective measure for feline health, and the American Association of Feline Practitioners recommends these core vaccines for all cats.12