More than one type of the deadly virus can infect a person at the same time - a state called "superinfection". Scientists have long suspected that different strains could combine to produce a hybrid - but this had never been demonstrated before.
Now scientists have shown that two major subtypes of HIV-1 swapped genes with each other to form an entirely new virus in a female patient. Furthermore, the hybrid took over from the original infections to become the dominant virus in the woman's body. This caused her condition, which had been relatively stable, to rapidly deteriorate
View: Full Article | Source: Yahoo News