Pfizer’s Science Chief Explains Why Its Vaccine Contains Lower mRNA Dose Than Moderna’s Pfizer chose a lower mRNA amount to minimize the risk of uncomfortable side effects. By Sissi Cao
COVID Relief: Pfizer Vaccine Works On Mutations Found In UK, South Africa: Study More testing is needed to confirm the vaccine's efficacy. By Sissi Cao
Director Florian Zeller Says Casting a Real Couple Brought ‘Bunker’ Closer to Truth By Stephen Garrett