R0=5.7 would imply that in any area with dropping cases and low rates of vaccination (say sub50) we should expect people to be taking other precautions against

R0=5.7 would imply that in any area with dropping cases and low rates of vaccination (say sub50) we should expect people to be taking other precautions against covid. The fact that cases are receding thus can likely be attributed to behavioral changes. Thus we cannot nessecarily expect dropping cases to be stable if we go back to status quo from some years back. Thus we can predict that non-vaxxers are a spoiler on any complete "return to normal" including bar culture, based on currently known evidence. I would figure that this screening measure gets more and more pointless the higher vaccination rates are simply on the grounds of it being overkill. For what it's worth most health authorities seem to figure about 70% first dose will take a serious bite out of covid, but I'm not sure what the magic number is.