this post was submitted on 27 Nov 2021
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Of course the immune system is related to a virus. Vaccines are not magic, what they do is allow the immune system to fight covid more effectively, by generating more antibodies. Sure it is possible that a young, healthy person gets a severe infection, but the probability for that to happen is vastly lower compared to a 70 year old with various chronic diseases.
Edit: Here is an easy to understand explanation how vaccines work.
I know, what I wanted to say is that it's not like because you're healthy person you're going to do just fine against Coronavirus, you need to get vaccinated because the body is not capable of creating antibodies that are cable of fighting it without the vaccine.
Of course the body is capable, thats exactly what the immune system is for. What the vaccine does is simulate an infection, so when you actually get infected, the immune system remembers how to create antibodies, and does it faster. If the human body were unable to form covid antibodies without vaccination, every single infected person in 2020 would have died.