AIDSOutline Simple introductionCause of AIDSWays of spreading How to prevent it Your effort is needed Notorious history AIDS , short for Acquired Immune Deficiency Syndrome ,was first found in United States in 1981 . In China , it was first diagnosed in 1985 . The patient was a foreigner who came to China for traveling .From 1981 to 2006 , there have been 65 million people were infected with AIDS ,among which 25 million were die from AIDS .Cause of AIDSHIVHIV -human immunodeficiency virus , can be categorized into two groups , that is HIV-1 and HIV-2 . 1 1、Virus attaches to cell surfaceVirus attaches to cell surface2 2、 Virus core is released into cytoplast Virus core is released into cytoplast 3 3、RNA is converted into DNA in cytoplastRNA is converted into DNA in cytoplast4 4、Viral DNA enter cell nucleus and combine with Viral DNA enter cell nucleus and combine with host cell DNA host cell DNA 5 5、Viral DNA is transcribed into viral RNAViral DNA is transcribed into viral RNA6 6、New viral RNA leave cell nucleus and enter New viral RNA leave cell nucleus and enter cytoplast cytoplast 7 7、Viral RNA translated into new viral proteins Viral RNA translated into new viral proteins 8 8、Viral RNA and proteins congregate at cell Viral RNA and proteins congregate at cell surface waiting to form new virus surface waiting to form new virus 9 9、New virus particle buds is formed and released New virus particle buds is formed and released all around bodyall around body Origination of AIDSIt is newly reported that HIV-1 was found in chimpanzees .HIV-1 was evolved from SIV .In fact , AIDS came from Africa .HIV virus will not cause any diseases, but will make you lose the immune ability so that you are susceptible to many diseases .You must know that Patients lives lean AIDS spreadingMainly , AIDS is spread through sexual intercourse , blood and other body liquid ,or spread by mothers .Embracing ,handshaking ,coughing or sneezing and sharing daily-used public facilities will not spread AIDS.methods of preventionObserve sexual morality ,dont have sex with those who are AIDS patients .Avoid unnecessary blood transfusion and injection , refuse using HIV contaminated blood , and use the clean surgical instruments only .Stop receiving virus from mother generation by using drugs .Stop AIDS , keep the promise .World AIDS Day theme of 2008 : Leadership(全民动员). This theme will continue to be promoted with the slogan “Stop AIDS. Keep the Promise. Attitude Influences Disease SeriouslyHelp ,care and love those who live with AIDS ! We should :Not only government but also every citizen should involve in AIDS campaign !Only through making concerted efforts can we find satisfactory methods .Thank you !