Cats that live only in doors should also be vaccinated - because owners can bring the infection from the street on their shoes. For example, feline plague (or feline panleukopenia) is still common and frequent.
The most important thing is to properly vaccinate a young animal (kittens and puppies) early in its life. Vaccination of a young animal is carried out in 2-3 stages. The last vaccination should be given at over 16 weeks of age.
Further vaccination regimens depend on the lifestyle and risk group of the animal. Vaccination of domestic cats can be carried out every 2-3 years.
Answer: yes, it is.