A new Covid variant called XBB.1.5 is driving a new wave of infections.But susceptibility to it is not, as some contend, being fueled by vaccines.Still, the surges of ever more immune-evasive variants raise legitimate questions about whether vaccines and boosters are still protecting us from infection, or should only be recommended for their ability to prevent severe disease and death.
#people #necessarily #vaccination #participants #massachusetts #hospitalizations #infection-rates #health-care-workers
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