How did AIDS originate?

Studies show that AIDS originated in Africa and was brought to the United States by immigrants. On June 5th, 198 1, the US Centers for Disease Control and Prevention published a case report of 5 AIDS patients in Morbidity and Mortality Weekly, which is the first official record of AIDS in the world. In 1982, this disease is named "AIDS".

Soon after, AIDS quickly spread to all continents. 1985, a foreigner who traveled to China fell ill and died soon after being admitted to Peking Union Medical College Hospital, and was later confirmed to have died of AIDS. This is the first case of AIDS in China.

It takes several years for HIV-infected people to develop into AIDS patients, even as long as 10 years or longer. Due to the extreme decline of the body's resistance, there will be many infections and serious infections caused by many pathogens. In the later stage, malignant tumors often occur, and long-term consumption leads to systemic failure and death.

Although many medical researchers around the world have made great efforts, so far, no specific drugs have been developed to eradicate AIDS, and there is no effective preventive vaccine. AIDS has been listed as a Class B legal infectious disease in China, and it is one of the infectious diseases monitored by frontier health.

Extended data:

AIDS is a very harmful infectious disease, which is caused by HIV infection. HIV is a virus that can attack the human immune system. It takes CD4T lymphocytes, the most important cells in human immune system, as its main target, and destroys them in large quantities, making human body lose its immune function. Therefore, the human body is susceptible to various diseases, malignant tumors can occur, and the mortality rate is very high.

The average incubation period of HIV in human body is 8 ~ 9 years. Before you get AIDS, you can live and work for many years without any symptoms.

Baidu encyclopedia-AIDS