While the number of viruses available to make such a species jump
is unknown, studies such as that by Anthony and coworkers (1) provide rough estimates on the order of 320,000 currently circulating viral species in worldwide mammalian populations alone.
Emerging pathogens: the epidemiology and evolution of species jump
Prof Sharp added: "We want to understand which genetic differences in SIVcpz and HIV-1 evolved after the species jump
A critical early prevention strategy is to control animal populations and avert the species jump
Because chimpanzees were killed for food in parts of sub-Saharan Africa, the species jump
probably occurred when a hunter was exposed to the blood of an infected chimpanzee during its butchering.