What you mention is definitely a gray area. If it were me, and I had the virus a year ago, I would opt to get the vaccine in the realistic hope that it would lengthen my protection. If I had the virus a month ago, I would probably wait a while for fear of having a very adverse reaction due to the strong immune response. With that being said, that is just my opinion. I do happen to work in medical sales, and I have in passing discussed this topic with several doctors. They do not all have the same opinion.