If Vaccines contain the same germs(bacteria/virus) that cause the disease, what does vaccination help than being directly exposed to germ??

Question

If Vaccines contain the same germs(bacteria/virus) that cause the disease, what does vaccination help than being directly exposed to germ??

In: Biology

Answer 1

Vaccines usually don’t contain the whole germ just a part of it. The point is that the immune system can “practice” without the actual dangers of the disease. And when/if you encounter the real germ it can combat it more effectively meaning that you don’t get sick.
So it basically gives you the same immunity but without having to go through the actual illness itself.