The worst of delta spread, based on some current models, shows a peak in the wave of delta infection occurring sometime in September; with wide variation by region, correlating closely to the extent of vaccination and prior infection from region to region. https://t.co/UTOUHhwar8 https://t.co/6W4Ceuyhjr

— Scott Gottlieb, MD (@ScottGottliebMD) July 14, 2021