Screening and day 224 samples were tested for: HIV 1&2 antibody, p24 antigen and HIV nucleic acid PCR (negative); VZV (IgG positive, no rise in titer, IgM negative); B. burgdorferi (IgG and IgM negative); measles (IgG positive, no rise in titer); mumps, HSV 1 and 2 (IgG negative); EBV (EBNA IgG positive, no rise in titer, EBV Early Antigen IgG and IgM negative); CMV (IgG and IgM negative); ANA, ANCA (negative). The gene discussed is BTG3; the disease is measles.