Expression of human immunodeficiency computer virus antigen (HIV-Ag) in serum and cerebrospinal fluid during acute and chronic contamination. The VIDAS HIV DUO Ultra exhibited 100% sensitivity and 99.5% specificity overall, with a 99.7% specificity in low-risk individuals. The analytical sensitivity, as assessed by seroconversion panels and p24 antigen in samples, was equivalent to the sensitivity […]