Secondary immunization can achieve the effect of antibodies reaching a level that protects the human body from pathogen invasion.

When undergoing secondary immunization, it is necessary to go to a regular hospital to receive the vaccine in order to achieve the purpose of immunization. If the patient’s body shows low immunity and poor resistance to diseases, and is too weak, immunizing drugs can be injected to prevent diseases and improve the body’s resistance to diseases.

After secondary immunization, it can effectively prevent tetanus and prevent diseases such as diphtheria. If the leprosy-bacillus Calmette-Guérin (BCG) vaccine is injected during vaccination, it can also effectively prevent leprosy after vaccination.