Elkoholic...agreed, that is one of the concerns we have discussed at work in the hospital...that the vaccine does not necessarily mean one is 100% immune from the virus. and how long the vaccine immunity last, I have yet to hear a concrete time frame...I fear there could be a false sense of security with the vaccine....people need to continue to be cautious. So much yet to find out about the vaccine and questions to answer. I still take all the precautions necessary, even with having the vaccine, because we just do not know.