Drug resistance mutations in drug-naive HIV type 1 subtype C-infected individuals from rural Malawi.
Bansode, Vijay;
Drebert, Zuzanna J;
Travers, Simon AA;
Banda, Emmanuel;
Molesworth, Anna;
Crampin, Amelia;
Ngwira, Bagrey;
French, Neil;
Glynn, Judith R;
McCormack, Grace P;
(2010)
Drug resistance mutations in drug-naive HIV type 1 subtype C-infected individuals from rural Malawi.
AIDS research and human retroviruses, 27 (4).
pp. 439-444.
ISSN 0889-2229
DOI: https://doi.org/10.1089/aid.2010.0203
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In this preliminary study we show that in 2008, 3 years after antiretroviral therapy was introduced into the Karonga District, Malawi, a greater than expected number of drug-naive individuals have been infected with HIV-1 subtype C virus harboring major and minor drug resistance mutations (DRMs). From a sample size of 40 reverse transcriptase (RT) consensus sequences from drug-naive individuals we found five showing NRTI and four showing NNRTI mutations with one individual showing both. From 29 protease consensus sequences, again from drug-naive individuals, we found evidence of minor DRMs in three. Additional major and minor DRMs were found in clonal sequences from a number of individuals that were not present in the original consensus sequences. This clearly illustrates the importance of sequencing multiple HIV-1 variants from individuals to fully assess drug resistance.