they are divided into 2 types...a sterile vaccine and a non sterile vaccine....an example of a sterile vaccine is the one for smallpox...it actually blocks the virus...a non sterile vaccine example is the flu shot, it doesn't completely block the virus, but keeps the virus symptoms to a lesser extent over not taking the shot.
This vaccine everyone is taking is a non sterile vaccine, hence although you take it you can still get the virus, but it lessens the symptoms when you get the virus. The CDC lied, by omission, they initially said get the shot you won't get the virus, that is only possible with a sterile vaccine...smallpox. polio.....Also learned that a vaccine is a treatment and not a cure.....I heard this info on a radio station that if I mention it many would say it's bias, but this info came from a doctor so take it for what you want....just offering what some would consider insight....some may brush off....