. .just look at the graph and it's clear.
This is a rational and science-based presentation of the facts behind vaccination. No it won't stop you getting C-19 . .or any other virus - there's STILL NO CURE FOR VIRUSES - nothing has changed there . .our science knowledge is not that good yet. BUT, vaccination is the absolute best we have - it ensures a much better symptomatic/health outcome for those infected, and a greatly reduced viral load for infecting others.
It's very simple - think of it like a mugshot for police to identify criminals - they know what the perp looks like so they don't have to start from square one in their investigation, thus saving a heap of time finding the perp, and limiting the damage they can do in the future. Similarly, your body's immune system doesn't have to start from square one to fight off the virus - it already knows what to look for . .vaccination is just infecting you with a weakened version of the virus so it has a model/plan to produce anti-bodies should the body get infected with it again.
It's always going to be a simple race against time: your immune system's speed in A) identifying a (viral) infection, then B) experimenting with creating effective anti-bodies to fight it off, then C) producing/deploying those antibodies -VS- the speed that the virus can infect/damage the cells in your body and reproduce itself. If your body can skip straight to C in the process it's way ahead of the game and the amount of potential damage a virus can do is (logically) limited. End of story.