Professor Karina Butler:

There are probably not enough data but there is a general feeling that the need for booster doses or a further dose similar to the flu vaccine is quite likely. It may not be every year. It might be every couple of years. Work is ongoing to develop a pancoronavirus vaccine, which would not be as changeable and might have a broader range of cover. It is too early to say but it is certainly possible that there might be a need for additional vaccine doses.