SARS-CoV-2 spike-specific saliva IgA levels remained more elevated 180 days after vaccination in individuals with previous infection compared with mRNA-1273–vaccinated individuals (104 × 10−5 [IQR, 61 × 10−5 to 208 × 10−5] vs 70 × 10−5 [IQR, 41 × 10−5 to 118 × 10−5]; P < .001) (Figure 1 and eTable 2 in Supplement 1). The gene discussed is CD79A; the disease is infection.