Ved selektering af behandlingsregimer bør det derfor antages, at virus, som er en del af den hidtil ikke- detekterede del af CXCR4- using populationen (dvs. lav viralpopulation), har samme resistensmønster som CCR5- tropisme population.
Hence, in the selection of a treatment regimen, it should be assumed that viruses forming part of the previously undetected CXCR4 -using population (i. e. minor viral population) harbours the same resistance pattern as the CCR5-tropic population.