High vaccination rates were supposed to do that, but compared to what? If you do an interim thing to reduce the transmission rate (and it works) and then you d

High vaccination rates were supposed to do that, but compared to what? If you do an interim thing to reduce the transmission rate (and it works) and then you do something permanent (and it works too, compared to the initial state) and stop doing the first, the transition might not be an improvement compared to the interim.