Vaccination is so super important. Cats should not be vaccinated with this when they are already sick or under a lot of stress, though, because it's a live vaccine and can make them come down with URI if their immune systems are compromised.

Pros: Vaccinate!

Cons: None

Still prefer the killed vaccine made by fort dodge but you should always vaccinate your pet for these items, even if your cat is indoors. You can actually bring distemper into your household accidentally.

Pros: n/a

Cons: n/a