It is not that surprising really, since as it says, they are talking about young adults admitted to hospital. The critical thing being, "admitted to hospital," since if you are, then the virus is clearly affecting you seriously, the age related difference being that, younger people are less likely to be seriously affected and require admission.

Best advice is whatever your age, do your best to avoid catching it. And as it is the older population who tend to get the jabs first it is perhaps time to start to worry about the young most.