What is a vaccine and how does it affect the immune system?!
Question: a vaccine is usually either a dead or a small amount of the live form of a virus that is usually injected into the body. The body's white blood cells then attack it. The body remembers the infection and how to deal with it better. This makes it harder for you to catch the virus.
Answers: a vaccine is usually either a dead or a small amount of the live form of a virus that is usually injected into the body. The body's white blood cells then attack it. The body remembers the infection and how to deal with it better. This makes it harder for you to catch the virus.
lets say you get a vaccine for the flu. in that vaccine is a little bit of the flu bacteria/germs. your body will then reconize it, destroy it because its such a little amount, and when the real thing comes into your body, it will immediately kno that its bad because the vaccine gave it a heads-up on what the bacteria was.