ujm: current position is no.
Most of propagation is going through young population, thus it will continue for some time, while, hopefully number of difficult cases will be gradually reducing. Presumably, with lower deaths, youngsters will be even less careful, and thus, move to herd faster.
Re: transition. Recent studies compare locations with and without colleges and see that half of deaths are attributed to presence of colleges by eventually propagating thru the rest of community.
Most direct route – medical students that were, in the studied example, 25% of nursing home staff.