EBV types in subgroups of HIV-1–infected individuals. (A) Contribution of EBV type 1 (▪), EBV type 2 (▩), and dual infection (□) in the total percentage of EBV-positive individuals in different groups of HIV-1–infected subjects (LTA, PROG, and NHL). EBV-type assessment was performed by type-specific PCR analysis directly on PBMC as described in Materials and Methods. (B) Contribution of EBV type 1 (▪), EBV type 2 (▩), and dual infection (□) in the total percentage of EBV-positive individuals in two groups of progressors to AIDS (AIDS-OI and AIDS-KS). EBV-type assessment was performed by type-specific PCR analysis directly on PBMC as described in Materials and Methods.