So long for "It will go away in one week" :
Harvard research. Suggests this social distancing will have to be continued through 2022. Link in comment.
And in other place : vaccines, even when administered, takes 6 months to be effective. It's not that you can take a vaccine and jump into viruses like in the films.
And scientists haven't been able to come up with a vaccine for many and many other viral diseases. Even common flu vaccines don't work as expected.