• Merck & Co. Inc., of Whitehouse Station, N.J., presented data from a post-hoc subgroup analysis of three studies, which found that integrase inhibitor Isentress (raltegravir) demonstrated consistent long-term viral suppression and a well-established safety profile in adults co-infected with HIV-1 and hepatitis C virus and/or hepatitis B virus, compared to adults with HIV-1, at 240 weeks.