"Missing" is an immune system that does not protect you from viruses, influenza, diseases, and colds. Just as someone can not judge that it is really happy, I can not judge whether someone is eventually ill. When people lack knowledge about AIDS and AIDS they do not seem to know anything about the situation of others. HIV and AIDS are not contagious, you can not achieve it even if you hold a hug, grasp a hand, or kiss someone. Many people infected with this virus do not know that they are HIV positive.
HIV stands for human immunodeficiency virus. AIDS (acquired immune deficiency syndrome) is the final stage of HIV infection, progressive failure of the immune system threatened life and opportunistic infection prospered. Through early diagnosis and effective treatment, most people living with HIV do not continue to develop AIDS. If left untreated, depending on the subtype, the average survival time after infection is 9 to 11 years. Chimpanzees in West Africa are considered to be sources of human HIV infection. It is believed that when a hunter comes in contact with the blood of an infected chimpanzee, it spreads to humans. The earliest human infection was from a blood sample of a man from Kinshasa Democratic Republic of the Congo. Genetic analysis of the samples showed that HIV-1 (one of the two strains) may have originated from a single virus in the late 1940's.
Human immunodeficiency virus infection and acquired immune deficiency syndrome (HIV / AIDS) are a series of symptoms caused by human immunodeficiency virus (HIV) infection. After initial infection, one may not notice the symptoms, or may experience a transient influenza-like illness. Usually, the symptoms that follow are not long-term. As the infection progresses it further interferes with the immune system and increases the risk of common infections such as tuberculosis and other opportunistic infections as well as tumors that rarely affect the people working the immune system . Symptoms of these late stage infections are called Acquired Immune Deficiency Syndrome (AIDS). This stage is also usually associated with unexpected weight loss