Vaccination is one method ,as is quarantine / lockdown and mask wearing in public congested places to reduce the infection rate to a manageable level for the health service .
After all, the vaccine isn’t 100% effective for all people. We still got “double jabbed” people going into hospital with covid.
most of the vaccines have had side-effects of one sort or another, personally in my situation with an underlying blood clotting disorder I have not had the jab , I know the needs of the many, outweigh the needs of the few , and can even understand the current easing of restriction in England , most of the at risk have been offered and have had both jabs and those that are left the young, are less likely to become seriously ill .
Summers here, so follow government advice and get out in the fresh air and get a few miles in on them bikes