All coverage
Pfizer Scaled Back 2020 COVID-19 Vaccine Production Targets From 100 Million to 50 Million Doses
By Robert Langreth
More Than 12.7 Billion Shots Given: Covid-19 Tracker
By John Boudreau, Janice Kew & Michelle Cortez
COVID-19 vaccine distribution's 'last mile' poses huge challenges
By Tina Hesman Saey