A healthcare worker gives the Pfizer/BioNTech vaccine to Norman G. Einspruch, 88, a cardiology patient, as part of COVID-19 vaccination plan for the seniors at the Jackson Memorial Hospital in Miami, Florida, United States on December 30, 2020.Marco Bello | Anadolu Agency | Getty ImagesHigh-risk groups such as the elderly and people with underlying medical conditions are expected to be the first in line to get booster shots of the Pfizer-BioNTech Covid-19 vaccine, the company’s chief scientific officer told investors Tuesday.The two-dose vaccine has been shown to be about 95% effective against Covid two weeks after the second dose, though researchers who helped …
