新华网华盛顿10月2日电一个国际研究小组2日说,如今在全世界流行的艾滋病病毒“几乎可以肯定”起源于大约100年前的中非最大城市、而今刚果(金)的首都金沙萨。自从艾滋病作为一种传染病出现以来,全世界共有7500万人感染。人们早已知道,艾滋病病毒最初来自非洲中西部的灵长类动物,但具体起源地和传播途径仍存在争议。研究人员在美国《科学》杂志上报告说,艾滋病病毒-1型M组的共同祖先最早出现于1920年左右的金沙萨,那个时候刚果(金)叫做 Xinhua Washington, Oct. 2 (Xinhua) An international research team said on the 2nd that the HIV prevalence in the world today is “almost certain” originated in the largest Central African city about 100 years ago. Now the capital of the DRC Kinshasa. Since the advent of AIDS as a contagious disease, 75 million people have contracted the disease worldwide. It has long been known that the AIDS virus was originally from primates in the central and western Africa, but the exact origins and routes of transmission remain controversial. The researchers reported in the U.S. Science that the common ancestry of the HIV-1 M group first appeared in Kinshasa around 1920, when the DRC was called