How a vaccine causes immunity?

Answer 1

I am not a doctor but the way it was explained to me is this. When someone is injected with a vaccine, a small amount, the antibodies in your body attack it. Our antibodies are more plentyful therefore we destroy the let's say germs. And if our body is ever infected again we are able to regognize it and our antibodies again fight it off, this time from memory. When we are infected with say the germ (im not sure of the exact name of these bugs, say an ear infection, often a dr will prescribe an antibiotic to fight the infection. Often we quite taking the antibiotics before the infections is over . So the infection is now the antibody, it learns to fight the antibiotic dr are constantly prescribing antibiotics. So now we are breeding these super germs. I am not a dr so ask a dr or pharmacist to get the exact answer. And don't take antibiotics unless needed and if so finish them all

Answer 2

The wonders of the immune system. When an agent (vaccine or natural exposure) is introduced into the body antigens are activated. When they activate antibodies are then created to lock in on the virus to destroy it. Some vaccines do not offer 100% protection. A vaccine can either be live or killed. A rabies vaccine for example is a killed vaccine. After a virus whether natural or vaccinated is encountered the immune system makes memory cells that remember how to destroy the virus. When the virus is introduced at a later date the memory cells activate and kill off the virus before any symptoms of illness are seen.

Answer 3

A vaccine introduces a harmless form of a pathogen or its components to the body, stimulating the immune system to produce an immune response. This response includes the production of antibodies and memory cells that recognize and respond more quickly to the pathogen if encountered in the future, providing immunity against the actual disease.

Answer 4

If the cell knows what the nasty bacteria or virus looks like from the small amount of it given from the vaccine, then it know how to defend itself if you ever get it :D

George Covello