a desert in NW India and S Pakistan. About 77,000 sq. mi. (200,000 sq. km). Also called Great Indian Desert.
HIV tests are used to detect the presence of the human immunodeficiency virus (HIV), the virus that causes acquired immunodeficiency syndrome (AIDS), in serum, saliva, or urine. Such tests may detect antibodies, antigens, or RNA.
Once infection occurs, it can take a couple of weeks for symptoms to appear. These may include flu-like symptoms, weight loss, and fatigue. However, HIV might not cause symptoms for several years. The only way to know if you have HIV is to get tested. Knowing your status allows you to get treatment sooner and to take steps to prevent transmitting the infection to others.