Thanks, Amigoaz! I've come across this info before, but this video makes it much more clear. I think I actually understand it now!
I just came across this article which has important info about how long it takes for vaccines to actually provide protection, and that it's not immediate. Point is that we don't have the full benefit of the vaccine right after we get the 2nd shot. It takes a few weeks:
http://www.theatlantic.com/health/archive/2021/03/how-long-wait-fully-vaccinated/618303/?utm_source=pocket-newtab |