If a dog scratches and bleeds, you need an injection. Because rabies virus mainly exists in cats, dogs and other animals. Patients are easily infected with rabies virus after being scratched and bleeding by dogs. If the scratch wound is particularly large and the amount of bleeding is large, serum immunoglobulin will also need to be injected at the same time to block the effect of rabies more quickly. It is best within 24 hours and not more than 48 hours to produce antibodies as early as possible to neutralize the virus and avoid the occurrence of rabies.

Precautions for rabies vaccination:

1. During the vaccination period, do not drink alcohol, strong tea or coffee, and do not eat irritating food, such as Chili peppers, onions, garlic, etc.

2. Do not participate in too strenuous exercise or engage in heavy physical labor to avoid excessive fatigue.

3. For rabies vaccination, you must go to regular hospitals and disease control centers with rescue equipment. Once allergic reactions occur, you can get timely rescue.