What are vaccines?
How your immune system works

Before getting into vaccines, let’s talk a bit about how your child’s immune system works. Your immune system is designed to help protect against “germs” like viruses and bacteria that may enter your child’s body and make him/her sick. When germs enter your child’s body, his/her immune system begins to produce

antibodies [ANN-‘tee-‘bod-‘eez].

Antibodies can attack and help destroy bacteria and viruses.

The immune system makes antibodies that help destroy disease-causing germs.
How vaccines work
Vaccines are made using killed or weakened viruses or bacteria. When these are introduced to your child’s body in the form of a vaccine, your child’s immune system recognizes them and learns how to create antibodies to defend against future infection.
Vaccines ‘teach’ your child’s body how to produce antibodies and defend against future infection.

Your child’s immune system is always hard at work. In fact, children are exposed to thousands of germs every day!

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Vaccines can help to protect our health

Hear how vaccination can help protect us from infectious diseases.

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Questions about vaccination
Common questions about vaccination

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