We're a Long way from this virus becoming a minor issue. Winter weather has reduced the numbers as more people stayed home. Millions getting vaccinated is a big help, but millions still need to get the shots....hopefully before Summer. There are still a bunch of people who will refuse the shots....and they will be a Negative in controlling this virus.
Brazil is a total mess, and some of the other South and Central American nations aren't much better. This huge wave of illegal immigrants and children descending on our SW states is another big Unknown. How many of them, especially the hordes of children, might be carrying variants of this virus, and are, or soon will be, sent to families all over the nation.
At this point, any "weekly" reductions in the numbers are quite likely temporary, and Only by keeping the momentum to control this virus, will we hopefully see a Real decline later this year.