We’ll Probably Need Booster Shots for Covid-19. But When? And Which Ones?

New Discovery Helps Explain How COVID-19 Overpowers the Immune System

Pfizer-BioNTech COVID Vaccine Recipients Have Lower Antibody Levels Targeting the India (Delta / B.1.617.2) Variant

Fauci says GOP efforts to demonise him are 'nonsense' and 'an attack on science' Doctor says critics have twisted questions about Covid’s origins into a way to attack him