What is the relation between an antigen and a vaccine?
Antigen is the Effect, while Vaccine is the Cause.
An antigen/antibody is a molecule capable of inducing an immune response on the part of the host organism.
A vaccine is a biological preparation that provides active acquired immunity to a particular disease.
Vaccines are methods on providing active acquired immunity, by exposing individuals to weaken and lab controlled diseases, So the body could natural acquire immunity.
Antigens/Antibodies are the one who is responsible for one's immunity. The human body naturally produces antigens that fends off foreign things inside the human body.
During the process of immunization, Vaccine is injected, weak foreign pathogens enter the body, Once the body detects the foreign pathogens, the body produces antigen to fend off these foreign stuffs. Once the body is clear of the pathogens, the body keeps on produces these antigen, in preparation if ever a similar pathogen enters the body. and that's how your immunity improves.
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