IFNA1 and COVID-19: LAIR1 expression in cMs from critical COVID-19+ cases was high early in the disease course and significantly decreased over time in those patients (LMM; COVID-19+ critical: slope = −1.3 × 10−4, P < 0.05; COVID-19+ critical anti-IFN: slope = −1.5 × 10−4, P < 0.05; Fig. 4C and fig.