The actor Ian McKellen receives the Pfizer-BioNTech COVID-19 vaccine in London on December 16. Pfizer’s top scientist said it chose a relatively low COVID-19 vaccine dose to minimize side effects. Pfizer’s vaccine has 30 micrograms of mRNA, the active ingredient. Moderna’s has 100 micrograms. Both vaccines produce similar side […]
Pfizer picked a COVID-19 vaccine dose far lower than Moderna’s to minimize side effects, its top scientist says
