CD40LG and hepatitis A virus infection: Results of tests for possible infectious causes of hepatitis showed that our patient was negative for cytomegalovirus (CMV) IgM, parvovirus B19 IgM and IgG, and Epstein-Barr viral capsid antigen (EBV VCA) IgM, and positive for CMV IgG and EBV VCA IgG positive.