human immunodeficiency virus
(HYOO-mun IH-myoo-noh-deh-FIH-shun-see VY-rus)
The cause of acquired immunodeficiency syndrome (AIDS). Also called HIV.
The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.
Updates regarding government operating status and resumption of normal operations can be found at opm.gov.