Abstract
Acquired immunodeficiency syndrome(AIDS)is caused by the human immunodeficiency virus(HIV).It has ravaged everywhere in the world and has seriously jeopardized people’s physical and mental health and their lives since the first case was announced by the US Center for Disease Control in 1981.Recent AIDS Trend The International Current Status"The latest global AIDS report"issued by the Joint United Nations Programm on HIV and AIDS(UNAIDS)on November 23,2010(1)stated that there were 2.6 million new AIDS cases in 2009,1.8 million people died related to AIDS and up to the end of2009,the HIV infectors reached 33.3 million.Every country in the world has done a series of works in ensuring safe blood supply,intervening behavior of high risk group and studying medicine,which effectively suppressed the zooming momentum of AIDS.However,AIDS is still spread globally,with the ratio of 2:5,that is,when 2 AIDS patients start to receive treatment,5 new HIV infectors appear.(2)According to statistics,even in the low prevalence areas(
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