CD79A and infection: The highest levels of SARS-CoV-2 spike-specific saliva IgA were detected in patients with previous infection 1 month after vaccination and slightly declined afterward (medians of normalized levels: 155 × 10−5 [IQR, 69 × 10−5 to 387 × 10−5] at day 29; 107 × 10−5 [IQR, 63 × 10−5 to 217 × 10−5] at day 57; and 104 × 10−5 [61 × 10−5 to 208 × 10−5] at day 180) (Figures 1 and 3 and eTable 2 in Supplement 1).