Table 2.

Outcome events during follow-up by exposure status

StatusNAt-risk Time
(pt-mo)
Any SARS-CoV-2 InfectionClinically Manifest COVID-19
nRateanRatea
Baseline IgG+ versus IgG-
IgG+2116062142.330.5
IgG-21166172494.11382.3
Baseline Hx+ versus Hx-
Hx+10428262.100
Hx-223363972574.01412.2
Baseline IgG+ and/or Hx+ versus IgG-/Hx-
IgG+ and/or Hx+238659142.130.5
IgG-/Hx-209960202494.11382.3
Baseline IgG+/Hx+ versus IgG+/Hx- versus IgG-/Hx+ versus IgG-/Hx-
IgG+/Hx+8724062.500
IgG+/Hx-13437782.130.8
IgG-/Hx+17420000
IgG-/Hx-209960202494.11382.3
  • a Expressed as events per 100 pt-mo.