Covid Live Updates: New Study Finds Pfizer Vaccine Provides Strong Protection Against Hospitalization

Here’s what you need to know:ImageEmpty bottles of the Pfizer-BioNTech Covid-19 vaccine last month at a clinic in Troy, Mich.Credit…Emily Elconin for The New York TimesThe Pfizer-BioNTech coronavirus vaccine is 90 percent effective at preventing hospitalization for up to six months, with no signs of waning during that time period, according to a large new…