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war may have spread hiv by BBC News - May 13, 2003 |
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| Tuesday, 13 May, 2003, 08:02 GMT 09:02 UK "Scientists believe a form of HIV probably entered the human population in Africa at least 60 years ago - and that war helped it spread. "Although HIV is usually spoken of as one virus, in fact it comes in two distinct types, HIV-1 and HIV-2. "HIV-1 came from chimpanzees, and has spread globally; but HIV-2, which came from sootey mangabey monkeys, has remained concentrated in west Africa, where it infects approximately 1% of the population." |
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