Among the suspected COVID-19 cases (the remaining 26 from 81 patients), one specimen had S-, RBD-, and N-specific IgM and IgG antibodies, one contained only RBD-specific IgM antibodies, two had only S- and N-specific IgG antibodies, two had only S-specific IgG antibodies, and two had only N-specific IgG antibodies. The gene discussed is CD40LG; the disease is COVID-19.