A ____ introduces a small amount of ____ or inactive ____ into the body to ____ us from disease. ____ blood cells called ____ produce ____ that match the antigens on the ____ of the dead pathogen. In the ____, if the real ____ infects you your ____ system starts to protect you ____. Different ____ are needed to ____ you against ____ pathogens. Polio, rabies and ____ all have individual vaccines. Vaccinations are usually given to ____ or people going to ____ where there is a ____ risk of infection, such as ____. Vaccines can be ____ in 3 main ways. Through ____ with a syringe. ____ where they are given via mouth or by ____ spray.

Vaccination

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