RT Journal Article T1 Phylodynamic and Phylogeographic Profiles of Subtype B HIV-1 Epidemics in South Spain A1 Perez-Parra, Santiago A1 Chueca, Natalia A1 Alvarez, Marta A1 Pasquau, Juan A1 Omar, Mohamed A1 Collado, Antonio A1 Vinuesa, David A1 Lozano, Ana B. A1 Yebra, Gonzalo A1 Garcia, Federico K1 Molecular epidemiology K1 Drug-resistance K1 Transmission dynamics K1 Population-dynamics K1 Antiretroviral therapy K1 Infected individuals K1 Northwest spain K1 Basque country K1 Prevalence K1 Evolution AB BackgroundSince 1982, HIV-1 epidemics have evolved to different scenarios in terms of transmission routes, subtype distribution and characteristics of transmission clusters. We investigated the evolutionary history of HIV-1 subtype B in south Spain.Patients & MethodsWe studied all newly diagnosed HIV-1 subtype B patients in East Andalusia during the 2005-2012 period. For the analysis, we used the reverse transcriptase and protease sequences from baseline resistance, and the Trugene (R) HIV Genotyping kit (Siemens, Barcelona, Spain). Subtyping was done with REGA v3.0. The maximum likelihood trees constructed with RAxML were used to study HIV-1 clustering. Phylogeographic and phylodynamic profiles were studied by Bayesian inference methods with BEAST v1.7.5 and SPREAD v1.0.6.ResultsOf the 493 patients infected with HIV-1 subtype B, 234 grouped into 55 clusters, most of which were small (44 clusters = 5 patients, and most (82%, 109/133) were men who have sex with men (MSM) grouped into 8 clusters. The association with clusters was more frequent in Spanish (p = 0.02) men (p PB Public library science SN 1932-6203 YR 2016 FD 2016-12-21 LK http://hdl.handle.net/10668/19169 UL http://hdl.handle.net/10668/19169 LA en DS RISalud RD May 9, 2025