Humoral responses to SARS-CoV-2 are detectable through saliva, scientists find

Your saliva may be able to tell you if you’ve developed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies, suggests a new medRxiv* preprint study. In immunocompromised groups, salivary Immunoglobulin G (IgG) antibody levels were associated with IgG titers in blood serum 3 to 4 weeks after mRNA vaccination.

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