Incidence and Sexual Risk Factors of Cytomegalovirus Seroconversion in HIV-Infected Subjects

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Abstract

Background:

Data on incidence of cytomegalovirus (CMV) seroconversion in HIV-infected (HIV(+)) subjects was sparse.

Goal:

To determine the incidence of CMV seroconversion in sexually active HIV(+) subjects and sexual factors associated with CMV seroconversion.

Study design:

One hundred eighty four persons not infected by CMV at enrollment in a cohort of HIV(+) persons were studied. A case-control study within the cohort was conducted to determine the effect of sexual behavior in the 6 months prior to CMV seroconversion. Thirty seven cases of CMV seroconversion were compared with 136 controls.

Results:

The overall incidence of CMV seroconversion was 9.18 per 100 person-years (95% confidence interval (CI), 6.67-12.28) and was particularly high among homosexual men. After adjustment for age, socio-professional category, sexual orientation, and casual sex, the risk of CMV seroconversion was higher in subjects who never used condoms than in those who used them systematically (adjusted odds ratio (OR) 3.37; 95% CI, 1.05-11.00).

Conclusions:

In addition to the need to protect their sexual partners from HIV infection, HIV(+) subjects free of CMV infection should use condoms to avoid CMV infection and its complications.

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