40.Which of the following is incorrect option about AIDS? A. It is caused by retrovirus B. Do not specifically affect the sex organs C. It is a sexually transmitted disease D. It is a curable disease
Option D. AIDS (Acquired Immune Deficiency syndrome) is caused by HIV (Human lmmunodeficiency Virus, a retro virus). It mainly affects the 1-helper lymphocytes by infecting them. There is generally a long time lag between infection and occurrence of symptoms. Because of lowering of TH cell count, the person becomes vulnerable to infectious microorganisms, that otherwise, wouldn't have caused any disease (opportunistic infection). A major example of this is tuberculosis. Weight loss also occurs in such persons.
