Subjects with a CD4 count less than 250cells/mm3 or HIV viral load of less than 5000 copies/mL

Subjects with acquired immune deficiency syndrome (AIDS) or a previous AIDS diagnosis

Subjects whose HIV infection has been diagnosed less than 3 months prior to screening, or for who there is evidence of recent seroconversion

Subjects who have taken anti-retroviral drugs in the eight weeks prior to the study screening visit

Pharmacokinetics, Pharmacodynamics, And Safety Of Maraviroc (UK-427,857) In Patients With Human Immunodeficiency Virus