Fighting back

2019-03-07 02:03:01

PEOPLE in Africa will gradually evolve greater resistance to HIV, and those who do become infected will live longer. Receptors for chemokine molecules have been found to affect susceptibility to HIV infection and the time of onset of AIDS. These receptors vary naturally in the population. Paul Schliekelman and his colleagues from the University of California, Berkeley, say there will be a strong selective pressure for receptors that delay the onset of AIDS, since the disease usually strikes during the years when people are likely to have children. Computer models show that in 100 years’ time,