Code for Wymant et al. Science 2022 concerning the highly virulent subtype-B "VB" HIV-1 variant. An accessible summary of that study is here. The code here uses the supplementary data files that come with the paper; at time of writing, those files can be found at this link, though if that link breaks in the future, click on the link to the paper above and find the "Data S1 to S4" item in the "Supplementary Materials" section at the bottom.