A Growing Family

The New York Times reports on the discovery of two new retroviral members of the H.T.L.V. family, kissing cousins to HIV.

The viruses, found in rural Cameroon among people who hunt monkeys and other primates, were probably transmitted from the animals through blood from bites and scratches received in hunting, butchering and keeping the primates as pets, the scientists said at the 12th Annual Retrovirus Conference, which ended here on Friday.