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Updated: Aug 9, 2026

Amplifying and Quantifying HIV-1 RNA in HIV Infected Individuals with Viral Loads Below the Limit of Detection by Standard Clinical Assays
Published on: September 26, 2011
HIV viral load in Thai men and women with subtype E infections
R Trichavaroj1, M S de Souza, P Buapunth
1Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand.
Abstract:
The assessment of potential "breakthrough infections" in HIV vaccine trials requires knowledge of viral load in unvaccinated persons. Therefore, HIV-1 RNA was quantitated in plasma from Thai adults with subtype E infections. RNA was detectable (> or =500 copies/ml) in 93% of 255 specimens, with a mean (standard deviation) value of 4.09 (0.88) log copies/ml. The concentration of RNA was directly related to the presence of AIDS-defining illnesses, inversely related to CD4 count, and independent of gender after adjustment for CD4 count.
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