in order to determine whether the immunological abnormalities described in intravenous drug addicts ( ida ) , are due to hiv infection , other viral infections or to the abuse of narcotic drugs , we studied the t lymphocyte subsets and serological markers of infection with hepatitis b and delta virus , cytomegalovirus and epstein barr virus , in 49 ida .
C0042769
viral infections
C0019163
hepatitis b