There will be no return to the old normal for those of a certain age or medical conditions.
For us a the new Normal that has emerged is very different from what it was, with being housebound more, avoiding contacts with crowds, no shopping in person on a High Street, Supermarket or out of town centres. No visits to Art Galleries/Museums/Theatre/National Trust properties etc. The list goes on and on and it will remain our Normal for the for see able future.
Latest research indicates that those who have had Covid only have effective antibodies for three months against a re-infection. That is not going to make producing a vaccine an even more difficult a task. Thus the future does not look to good for many of us oldies.