The World Health Organization says as many as 10 million persons worldwide may have the virus(病毒) that causes rts believe about 350 thousand persons have the one million more may get it in the next five the United States,about 50,000 persons have died with country’s top medical official says more than 90 percent of all Americans who had the AIDS virus five years ago are dead.?
There is no cure for AIDS and no vaccine(疫苗) medicine to prevent ver,researchers know much more about AIDS than they did just a few years now know that AIDS is caused by a virus invades healthy cells including white blood cells that are part of our defense system against takes control of the healthy cell’s genetic(遗传的.) material and forces the cell to make a copy of the virus. The cell the viral particles move on to invade and kill more healthy AIDS virus is carried in a person’s body virus can be passed sexually or by sharing instruments used to take intravenous(静脉内的) also can be passed in blood products or from a pregnant woman with AIDS to her developing baby.?
Many stories about the spread of AIDS are cannot get AIDS by working or attending school with someone who has the can not get it by touching,drinking glasses or other objects used by such rts say no one has gotten AIDS by living with,caring for or touching an AIDS patient.?
There are several warning signs of an AIDS include always feeling tired,unexplained weight loss and uncontrolled expulsion of body wastes(大小便失禁). Other warnings are the appearance of white areas on the mouth ,dark red areas of skin that do not disappear and a higher than normal body temperature.
