Tweet from Bob_Wachter at September 19, 2021 at 10:07AM

SF @ 73% of city (all ages) vaxxed. For first time in months, @UCSFHospitals asymptomatic test positivity <1% (below), my window on chances avg person who feels fine has virus (undoubtedly lower if vaxxed, higher if not). Need to keep masking indoors, but risk way ⬇ from summer. https://t.co/K5IrO4BbGQ

— Bob Wachter (@Bob_Wachter)
Sep 19, 2021

from http://twitter.com/Bob_Wachter