As U.S. Faces Out-of-Control Pandemic, Pfizer Raises Hope for Vaccine, But Many Questions Remain
Pharmaceutical giant Pfizer has announced that a Phase 3, late-stage study found their potential COVID-19 vaccine showed more than 90% effectiveness. The two-dose vaccine still faces several challenges, including how to store and transport it, since it must be refrigerated at subzero temperatures. Pulitzer Prize-winning science journalist Laurie Garrett says the news is hopeful, but urges caution. “There’s been no scientific release.





























