Human immunodeficiency virus disease associated with wasting syndrome (Q53997)

This is a lentivirus (slowly replicating retrovirus) that causes acquired immunodeficiency syndrome (AIDS), a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive. This is a disease resulting in loss of weight, muscle atrophy, fatigue, weakness, and significant loss of appetite in someone who is not actively trying to lose weight.