“The optimistic scenario: Cases keep decreasing through August as the U.K. vaccinates more people … But if the opposite happens, if cases skyrocket so much that hospitalizations also rise to overwhelming levels, then even higher vaccination coverage and future restrictions might be necessary, especially in the fall. The situation will be worse in countries with lower vaccination rates.” The Atlantic: Watch the U.K. to Understand Delta.

+ England reopened amid a delta surge, then cases fell. Are there lessons for the U.S.? (Short answer: Keep getting more people vaccinated and check back in a week or two.)

+ “To me, the most confusing time in the pandemic was May 2020, as we exited lockdown and nobody quite knew what they should & shouldn’t do (clean the mail? touch the dog?). But now is giving May 2020 a run for its money.” UCSF’s Bob Wachter with a very informative tweet thread on the latest Covid science and how he’s reacting.

+ WHO calls for a moratorium on booster shots until at least the end of September. (At issue is all the countries still waiting for first shots.)

+ Meanwhile, there are a whole lot of 2021 headlines that look like 2020 headlines. New York Auto Show canceled as delta variant spreads.