Do vaccines kill diseases

Answer 1

Vaccines are not intended to kill, cure, or treat the flu, bacteria, or a different viral disease. Instead, they are for preventing the infection in the first place.

A vaccination is an introduction of the infectious agent (either killed or weakened so it can't make you sick) before you become exposed or sick from it being in your environment. Your body attacks it as if it were the actual active and full strength organism and as if you had a real infection. Once your body has done that, you are immune to that infection for life. Some viruses, like cold and flu, are able to mutate easily and quickly and that sometimes requires a whole new vaccine to prevent the new version.

When you get a vaccination, you are injected with a very small amount of the bacteria or virus inside your body (or for some types of vaccinations you can drink the vaccine or sniff it into your nose from a mist). Your immune system sends cells to fight the disease. After a period of time, usually a week or two after the vaccination, your body has learned how to fight that particular infection any time the organism and you cross paths again. Because you have already technically gotten the infection (because of that little bit in the vaccine) you have become immune to it so it doesn't make you sick any more.

Answer 2

The vaccination is a weak or dead version of the disease so when its injected into the body, your body tries to fight it and becomes immune to it. But you can still get the disease but Its not as likely. Hope this helps :)

Answer 3

No, vaccines "warn" the immune system of the possibility of a disease causing organism. If the immune system later encounters the organism it was "warned" about then the immune system will attempt to kill that organism before it can cause disease.

Without the vaccine the immune system would not encounter and learn of that organism until it was already causing disease.

Answer 4

A vaccine is used to activate the body's own immune system; the vaccine does not kill the disease organism itself, but it directs the immune system to do so.