Immunity People obtained via vaccination or through prior an infection with the SARS-CoV-2 virus may perhaps account for the lighter than anticipated COVID surge in the U.S. this winter, scientists say. David Ryder/Getty Illustrations or photos conceal caption toggle caption David Ryder/Getty Illustrations or photos Immunity Us citizens acquired by means of vaccination or through prior an infection with the SARS-CoV-2 virus may account for the lighter than predicted COVID surge in the U.S. this wintertime, researchers say. David Ryder/Getty Images This winter’s COVID-19 surge in the U.S. appears to be fading with out hitting almost as difficult as numerous had feared. “I assume the worst of the winter season…