Tag Archives: Protection

Pfizer Says 3rd Shot of Vaccine Boosts COVID Protection

WEDNESDAY, July 28, 2021 — New data show that protection from both doses of the Pfizer COVID-19 vaccine decreases slightly over time, but that a third dose significantly boosts levels of antibodies against several variants of the virus, including the highly contagious Delta variant that’s now dominant in the United States. Not everyone thinks a… Read More »