艾滋病起源于非洲，不是美国。

In 1986, a retrospective analysis of frozen blood samples from a variety of African countries identifies an unnamed African man living in Leopoldville (now Kinshasa), in the Democratic Republic of the Congo, as having HIV. This is probably not the first case of HIV ever – there are numerous cases of likely HIV infection based on symptoms and AIDS-defining illness – but this is the earliest where a blood sample can verify infection.