Check whether the purchased dog has been vaccinated. You can take it to a pet hospital to do a canine triple antibody test to test the antibody concentration in the dog's body. If the concentration is low or there are no antibodies, it means that the dog has not been vaccinated or the vaccine has not had an effect after injection. If the concentration is sufficient, it means the dog has been vaccinated and has produced antibodies. If the concentration is not enough, it is recommended that the owner take the dog for re-vaccination in time.

Precautions for dog vaccination:

1. Dogs can be vaccinated only if they are healthy and have no viral, bacterial infection or trauma or other diseases, and are not pregnant. vaccine.

2. You must go to a regular animal hospital to get vaccinated by a professional veterinarian, so as to ensure the effectiveness of the vaccine.

3. The dog should stay in the hospital for observation for 30 minutes after the injection. If the dog shows symptoms of edema, rash, or difficulty breathing, the doctor should be notified in time to receive an anti-allergic injection.

4. Do not take a bath within 10 to 15 days after the dog is vaccinated, because the dog will be very weak after the vaccine and its body resistance decreases. Taking a bath at this time is easy to catch a cold and the wound will be damaged. Infections can occur from water.

5. Try to avoid going out after vaccination to prevent infection by external bacteria and viruses. During this period, owners should take more careful care of their dogs.