As Pfizer and Moderna receive the FDA nod for COVID-19 boosters, their 2023 global sales projections appear to be just a fraction of the previous year’s. In 2022, Pfizer and its partner BioNTech jointly sold $56 billion worth of their Comirnaty COVID-19 vaccine, marking the best-selling drug of the year. Moderna’s Spikevax COVID-19 vaccine wasn’t…