What are Vaccines, and What are they used for?

Question

anonymous · Answer

I'm no expert and I'm going off basic knowledge but I'm pretty sure they are to help build immunity to viruses.

anonymous · Answer

Thanks! Someone else Know the Definition?

anonymous · Answer

MetalHead is right. 

Vaccines can contain pieces of viruses, 
or weakened viruses that are too weak to infect us. 

When we inject vaccines into our bodies, 
our white blood cells can learn to recognize the virus pieces from the vaccine. 

That's how we build immunity. 

Because the next time our white blood cells see anything that looks like the virus pieces from the vaccine, they'll recognize it, and attack it right away.

dean.shyy · Answer

Vaccines are bacteria or viruses in its true form or altered form. They are used to instill bacterial or viral immunity and help the immune system become stronger from exposure conditioning.

anonymous · Answer

Vaccines are weakened or dead micro organisms which are introduced into a person's body. the white blood cells prepare an antibody(an agent which can detoxify the toxic effect of the microorganisms) against this antigen(a foreign body) and because it is a weakened microorganism it doesn't do much. therefore the next time there is an invasion by the germs the white blood cell already has an antibody ready to combat it. this helps in strengthening one's immunity and Vaccines are normally taken orally.