Dear Editor The rapid evolution of SARS-CoV-2 mandates a better under-standing.of cross-neutralization and cross-protection among.*** information is essential to g.ide vaccine strateg. and public *** examine the cross...
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Dear Editor The rapid evolution of SARS-CoV-2 mandates a better under-standing.of cross-neutralization and cross-protection among.*** information is essential to g.ide vaccine strateg. and public *** examine the cross-protection among.different variant spikes,we initially prepared four chimeric SARS-CoV-2 viruses(Fig.1a),each bearing.the spike g.ne from Alpha,Beta,g.mma,or Epsilon in the backbone of USA-WA1/2020[isolated in January 2020 and defned as wild-type(WT)].
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