Omicron weakens vaccine protection, but boosters revive defenses, early data finds Posted inantibodiescoronaivirusCOVID-19DeltaInfectious diseaseomicronpublic healthSARS-CoV-2Sciencevaccine effectivenessvariants Posted byBeth Mole 12/09/2021 Omicron is “a tractable problem with the tools we have.”