There is also the fact that vaccines do not protect 100% of time, more like 40% to 80% depending on the vaccine, and the people vaccinated can be the cause of spreading a disease.
There is also the fact that vaccines do not protect 100% of time, more like 40% to 80% depending on the vaccine, and the people vaccinated can be the cause of spreading a disease.
RE: Vaccines & Herd Immunity - Why I Don't Understand It!