professor kampmann, can i put this to you?strain or mutation, like the flu vaccine does? that is an interesting one. so, that is a question that jonathan is an interesting one. so, that is a question thatjonathan is much better qualified than me on.” question thatjonathan is much better qualified than me on. i will put it to him in a moment. as far as i know, we don't have evidence there as quick mutation of the covid virus at this stage. the vaccines are fairly specific. i don't think we are looking at drift of the pathogen at this point. maybe you want to chip in? i think that is misplaced modesty from beate! this does not mutate as much as things like influe nza, mutate as much as things like influenza, and therefore i do not think this kind of evolution is going to be a significant in terms ofa going to be a significant in terms of a problem for vaccination. particularly because you do generate lots of different antibodies, lots of different cells that fight the virus, and therefore the virus has to escape this great multi