eLife Assessment
In this important quantitative study of HIV-1 evolution in humans and rhesus macaques, selection coefficients are inferred at scale over the HIV genome. Selection coefficients are similar in humans and macaques, providing convincing evidence that these coefficients are representative of the fitness landscapes of these viruses within hosts. This work should be of interest to the community working on quantitative evolution and fitness landscape inference, and the finding that rapid fitness gains in the HIV population predict bNAb emergence has implications for HIV vaccine design.