%0 Journal Article %T Low-Abundance HIV Drug-Resistant Viral Variants in Treatment-Experienced Persons Correlate with Historical Antiretroviral Use %A Thuy Le %A Jennifer Chiarella %A Birgitte B. Simen %A Bozena Hanczaruk %A Michael Egholm %A Marie L. Landry %A Kevin Dieckhaus %A Marc I. Rosen %A Michael J. Kozal %J PLOS ONE %D 2012 %I Public Library of Science (PLoS) %R 10.1371/journal.pone.0006079 %X It is largely unknown how frequently low-abundance HIV drug-resistant variants at levels under limit of detection of conventional genotyping (<20% of quasi-species) are present in antiretroviral-experienced persons experiencing virologic failure. Further, the clinical implications of low-abundance drug-resistant variants at time of virologic failure are unknown. %U http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0006079