BACKGROUND: The effect of antiretroviral therapy on seminal HIV shedding in the community remains unknown. OBJECTIVE: To evaluate the effect of antiretroviral therapy on HIV shedding in semen. DESIGN: Prospective cohort study. SETTING: University hospital in Rio de Janeiro, Brazil. PATIENTS: 93 HIV-infected men. INTERVENTION: Antiretroviral therapy as prescribed by each patient's physician. MEASUREMENT: HIV RNA in semen and blood plasma before and after introduction of therapy. RESULTS: At baseline, HIV RNA was detected in 69 semen samples (74%) and 89 blood samples (96%). Six months after introduction of therapy, HIV RNA was detected in 29 semen samples (33%) and 33 blood samples (38%). The mean reduction in levels of HIV RNA in semen at 6 months was 1.65 log10 units. CONCLUSIONS: Antiretroviral therapy reduces shedding of HIV in semen, which probably in tum reduces HIV transmissibility. However, a substantial proportion of patients may still be infectious and may have drug-resistant strains of the virus.
BACKGROUND: The effect of antiretroviral therapy on seminal HIV shedding in the community remains unknown. OBJECTIVE: To evaluate the effect of antiretroviral therapy on HIV shedding in semen. DESIGN: Prospective cohort study. SETTING: University hospital in Rio de Janeiro, Brazil. PATIENTS: 93 HIV-infectedmen. INTERVENTION: Antiretroviral therapy as prescribed by each patient's physician. MEASUREMENT: HIV RNA in semen and blood plasma before and after introduction of therapy. RESULTS: At baseline, HIV RNA was detected in 69 semen samples (74%) and 89 blood samples (96%). Six months after introduction of therapy, HIV RNA was detected in 29 semen samples (33%) and 33 blood samples (38%). The mean reduction in levels of HIV RNA in semen at 6 months was 1.65 log10 units. CONCLUSIONS: Antiretroviral therapy reduces shedding of HIV in semen, which probably in tum reduces HIV transmissibility. However, a substantial proportion of patients may still be infectious and may have drug-resistant strains of the virus.
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