The ultimate objective of this study is to determine the incidence and associations of mutations within gag and protease in order to search for criteria which permit interpretation of genetic variations capable to interfere in the catalytic activity of the protease enzyme, modify viral infectivity dynamics and contribute to the emergence of viral resistance to protease inhibitors in a well characterized cohort of HIV recently infected individuals in the state of São Paulo. A total of 150 samples of whole blood will be collected from HIV recently infected individuals as defined by other studies on the base of STARH algorithmic criteria. The region flank the whole gag gene will be amplified after synthesis of cDNA by using RT-PCR protocol established in our laboratory. Reaction products will be sequenced and and each sequence will be processed and analysed. The informations of sequence alignments, epidemiological and socioepidemiological data, viral load, CD4 T cell count and antiretroviral resistance will be compared and incorporated to the results.
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