Anti-spike S1 IgA, anti-spike trimeric IgG, and anti-spike RBD IgG response after BNT162b2 COVID-19 mRNA vaccination in healthcare workers.

J Med Biochem · 2021 · PMC8451231 · PMID 34616222

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highly significantno p-value reported

A highly significant correlation between the serum IgA titer and that of anti-SARS-CoV-2 neutralizing antibodies has also been demonstrated by Varnait et al.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.