That's right, vaccine doesn't prevent you from getting the virus so if you get it you'd then amount an immune response of some sort which is on top of the one p

That's right, vaccine doesn't prevent you from getting the virus so if you get it you'd then amount an immune response of some sort which is on top of the one provided by the vaccine. Or that goes to "fill up" again the immunity lost due to the time which went by since the vaccination.