WHITEHOUSE STATION, N.J.--(BUSINESS WIRE)--Merck & Co., Inc. announced today that the Antiviral Drugs Advisory Committee of the U.S. Food and Drug Administration (FDA) voted unanimously to recommend accelerated FDA approval of ISENTRESS™ (raltegravir) in combination with other antiretroviral therapy (ART) for the treatment of HIV infection in treatment-experienced patients with ongoing viral replication despite existing therapy.