Within 1 year after full rabies vaccination, the human body is protected by adequate titers of rabies antibodies. In general, a human body with a rabies antibody concentration higher than 0.5 U/ml is sufficient to protect humans from rabies virus transmission. If a person is bitten by a dog again within 1 year, there is generally no need for rabies vaccination, and even under the most conservative regimen, only 1-2 booster shots are required. If a person receives 1-2 booster shots after 1 year of basic immunization, the average antibody concentration can reach more than 20 U/ml, which can effectively protect the human body from rabies virus for at least 3 years. If a booster shot has been given, some people are immunized for a maximum of 150 months, but the antibody titer may drop after 150 months, at which point another booster shot is required, again boosting a certain concentration to protect the body. Patients should note that redness and pain at the vaccination site may occur after rabies vaccination, and some people may even develop hard nodes and peripheral edema of the injected limb, which can generally be relieved on their own and do not require treatment. Try not to take a shower on the day of vaccination to avoid infection at the vaccination site.