skybluetony176
Well-Known Member
I think it’s similar to the pneumonia vaccine in that it trains the immune system. Think I’m right in thinking that the pneumonia vaccine as an adult is a one off vaccine, different for children as they have a course of vaccines.What does 90% protection actually mean in reality? It's still unclear how long protection lasts, too, but I guess that's not as relevant, as the point is to suppress how much it's transmitted, so it becomes more like catching pneumonia, or something else - unlucky!