To further characterize the extent to which lymphoid cell abundance predicted COVID-19 severity, multiple regression with age, sex, and cell abundance, as independent variables, was performed on peak blood levels of inflammation markers indicative of COVID-19 severity: C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR), and the fibrin degradation product D-dimer (Gallo Marin et al., 2021; Gupta et al., 2021; Luo et al., 2020; Zhang et al., 2020; Zhou et al., 2020). The gene discussed is CRP; the disease is COVID-19.