A vial of the Pfizer-BioNTech Covid-19 vaccine and a single use syringe arranged at the University Hospital in Sungai Buloh, Selangor, Malaysia, on Tuesday, March 2, 2021. The first phase of the vaccine roll-out that will run through April involves about 500,000 frontliners comprising health-care, defense and security personnel, as well as teachers with co-morbidities, according to the government. Photographer: Samsul Said/Bloomberg