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English

HIV-1 is related to viruses found in chimpanzees and gorillas living in western Africa, while HIV-2 viruses are related to viruses found in the endangered west African primate sooty mangabey.

Chinese

HIV-1与生活在西非的黑猩猩和大猩猩体内发现的病毒有关,而HIV-2与西非的濒危灵长类白顶白眉猴(英语:Sooty mangabey)体内发现的病毒有关。