them, and activates defenses to limit their ability to multiply and cause damage. Vaccination prepares parts of this system before a person encounters the real pathogen.
After vaccination, the body can develop antibodies and immune cells that recognize important features of the virus. When exposure occurs, these defenses may respond more rapidly than they would in someone without relevant immune protection. The response can help restrict viral activity, reduce the likelihood of serious complications, and make it easier for the body to control the infection.
However, the immune response is
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