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Prevalence of HIV-1 dual infection in long-term nonprogressor-elite controllers.

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Methods: For DI detection, nucleotide sequences in env gene from viruses from 20 LTNP-EC were analyzed by maximum likelihood. Epidemiological and clinical parameters and host factors of patients were also studied.

Results: DI was detected in 4 (20%) of the 20 LTNP-EC, of which 3 maintained the elite controller status. CD4⁺ T-cell counts were not different between single and DI patients although higher CD8⁺ T-cell counts were observed in DI patients, and, consequently, the CD4⁺/CD8⁺ ratios were lower in LTNP-EC DI patients.

Conclusion: DI was detected in 4 (20%) of the 20 LTNP-EC, of which 3 maintained the elite controller status. CD4⁺ T-cell counts were not different between single and DI patients although higher CD8⁺ T-cell counts were observed in DI patients, and, consequently, the CD4⁺/CD8⁺ ratios were lower in LTNP-EC DI patients.

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