Is it still useful to vaccinate 20 hours after being scratched and bleeding by a cat? How many days does it take to vaccinate?

It is effective as long as the injection is within 24 hours of being scratched. This is the best period for injection, but the earlier the better. Five vaccinations are required, one dose of rabies vaccine each on days 0 (the day of injection), 3, 7, 14, and 28.

The full course of rabies vaccination must be completed on time. If the full course of immunization is not completed, sufficient anti-rabies immunity cannot be guaranteed, and the effect of preventing rabies cannot be guaranteed. Medical staff should inform patients of its importance.

Inoculation dosage. Rabies vaccine is administered at one dose regardless of weight and age.

Inoculation time, post-exposure prophylaxis must strictly follow "0,3 , 7, 14, 28 days” program for vaccination. The 0, 3 and 7-day injections are very critical for the body to develop immunity against rabies, so the vaccination time must be strictly implemented. In unavoidable circumstances, 14 and 28 days It is also acceptable to delay or advance the injection appropriately, and subsequent injections will still be administered according to the original immunization schedule.