
23/09/2025
Vaccines 2
How Vaccines Work
Vaccines teach your immune system how to create antibodies that protect you from diseases. It’s much safer to learn this through vaccination than by catching the diseases and treating them. Once your immune system knows how to fight a disease, it can give you lifelong protection.
Having a vaccine also benefits your whole community through “herd immunity”. If enough people are vaccinated, it’s harder for the disease spread to those people who cannot have vaccines i.e. people who are ill, have had a serious allergic reaction to a previous dose of the vaccine or have a weakened immune system.