claim: seasonal human coronavirus antibodies are boosted upon sars-cov-2 infection but not associated with protection
evidence_1: these antibodies were not associated with protection against sars-cov-2 infections or hospitalizations, but paradoxically these hcov cross-reactive antibodies were boosted upon sars-cov-2 infection.", "we then quantified pre-pandemic antibody levels in serum from a separate cohort of 252 individuals who became pcr-confirmed infected with sars-cov-2.", "although sars-cov-2 is a novel coronavirus, most humans had been previously exposed to other antigenically distinct common seasonal human coronaviruses (hcovs) before the covid-19 pandemic."
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  )