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How do vaccines work?
Vaccines work by introducing a of a pathogen, such as a protein or a weakened form of the , into the body. This prompts the to recognize it as a threat and produce antibodies to fight it. These remain in the body as a memory of the pathogen.
If the person is later exposed to the actual pathogen, their immune system can rapidly respond, preventing or reducing the severity of the infection. In this way, vaccines provide to specific diseases, ultimately protecting individuals and contributing to herd immunity within populations, reducing the overall spread of infectious diseases.
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