How are vaccines used to boost your bodys defence?

A vaccination is usually a dead virus that has been administered at a specific dosage to trigger the body to produce antibodies. As a result of this production, the body will recognize the same virus in the future and "attack" it and kill it before it can make the body sick.

A vaccine contains complete or partial microbes or the toxins they produce. It stimulates the immune system to raise antibodies against the antigens on the disease carrying organisms. A pathogen against which the body has been vaccinated alerts memory cells so causing the immune system to launch an instant defence.