At present, there is no effective vaccine to prevent AIDS, so the most important thing is to take preventive measures. The method is: lead an honest and clean life, do not engage in prostitution and avoid high-risk sexual behavior. Do not take drugs or share syringes with others. Do not transfuse blood and use blood products without authorization, but use them under the guidance of a doctor. Don't borrow or * * use personal items such as toothbrushes, razors and razors. Using condoms is one of the most effective measures to prevent sexually transmitted diseases and AIDS in sexual life.
2.2065438+0916543816 October, the research team led by American researchers obtained the genome sequence of a new HIV strain, and confirmed this new strain for the first time after the publication of the HIV-related naming standard 19. The research paper published in the American Journal of AIDS shows that this new strain belongs to M group of HIV- 1 and has been confirmed as subtype L. The vast majority of HIV strains infected by patients in the world belong to HIV- 1 type, among which group M is the most common.
3. After being infected with HIV, it usually takes 7- 10 years to develop into an AIDS patient. There is no difference in appearance between infected people with latent period and normal people. They can live and work without any symptoms, but they are contagious. HIV antibody can only be detected in blood after being infected with HIV 2- 12 weeks. Therefore, after the first test is negative, a second test can be done three months later to reduce the possibility of misdiagnosis.
4. Blood transmission: Blood transmission is the most direct mode of infection. It is very dangerous to import blood contaminated by virus and use syringes, acupuncture needles and tooth extraction tools contaminated by blood without strict disinfection. In addition, if you use an unsterilized syringe needle with an HIV-infected person, you will also be infected by the virus left in the syringe needle.
5. Sexual transmission: Sexual contact between the same sex and the opposite sex will lead to the spread of HIV. There are a lot of viruses in semen or vaginal secretions of HIV-infected people. In the process of sexual activity, due to the friction of the sexual intercourse site, it is easy to cause subtle damage to the genital mucosa. At this time, the virus will enter the blood of uninfected people.