Nitrocellulose strips were coated with the selected VZV antigens and tested with clinically characterized sera from acute chickenpox (n = 5), acute zoster (n = 18) and serologically defined VZV-IgG/IgM negative control sera (n = 24) for the presence of IgG and IgM antibodies (Table 1). The gene discussed is CD40LG; the disease is chickenpox.