system
Given the following post, respond as if you're commenting on Reddit:
human
Stupid question, but how do vaccines work?

I mean, if the immune system was being treated to a weaker form of the virus, wouldn't the actual virus be too strong for them?


EDIT: You guys are amazing.
gpt
It's not a stupid question.  Vaccines work by stimulating your immune system to take action against a potential threat, typically a virus.  The virus used to make the vaccine is either crippled so it can't infect cells or fragmented into pieces.  Your body reacts to the vaccine as if it were a real virus and makes defensive antibodies.  

That's the 20,000 foot view.  The details are quite interesting if you like biology.  Your immune system is an amazing system.