Moreover, by using an ELISPOT assay, we noted at the same time point the existence in vaccinated donors’ isolated PBMCs, of T cell clones specific for the SARS-CoV-2 S protein (Fig. 5C); as expected, T cell clones specific for the SARS-CoV-2 N protein were found only in COVID-19 recovered individuals (Fig. 5C). The gene discussed is PROS1; the disease is COVID-19.