The reasons why cats still get feline distemper even after being vaccinated:

1. The cat has not been fully vaccinated or the antibodies in its body have dropped. Only when the antibody titer is sufficient, the body will quickly produce antibodies to protect your pet's health when there is an external viral infection. When the antibody titer is insufficient, additional vaccines are needed to enhance the immune effect.

2. The cat’s immunity decreases, increasing the chance of external virus invasion. The purpose of cat vaccination is to prevent infection with certain infectious diseases, but when the antibody level in the cat's body drops below the effective value, the cat will be susceptible to external viruses.

Suggestions for cat vaccination:

1. Take the cat to a regular pet hospital to receive qualified vaccines. Secondly, in order to ensure that the pet is fully vaccinated, blood can be drawn to test the virus antibody titer 2-3 weeks after receiving the last dose of anti-virus vaccine.

2. After vaccination, the cat needs to be observed in the hospital for 20 minutes before leaving. If the cat develops an allergic reaction after being vaccinated, a doctor should be asked to desensitize it in time.

3. Cats should try not to take a bath for 3-7 days after being vaccinated, reduce walking, and do not feed them randomly.