CD40LG and infection: Nine patients (32.1%) were at the late stage of infection (EBNA-IgG-positive, EBV-VCA-IgG-positive and EBV-EA-IgG-positive) while six patients (21.4%) were at the early stage of infection (EBV-VCA-IgG-positive, EBV-VCA-IgM-positive and EBV-EA-IgG-positive).