Objectives:
HIV-infected persons with chronic herpesvirus infections may
experience paradoxical worsening after initiation of antiretroviral therapy
(ART), but the impact of longer term ART is unclear. We evaluated the
relationships between genital herpes simplex virus (HSV) shedding and ART
initiation and time on therapy in HIV and HSV-2 infected persons.
Design:
Prospective observational study.
Methods:
Rates of HSV shedding in 45 HIV and HSV-2 infected persons on or off
ART were prospectively followed over up to three, non-contiguous, 60-day
periods, during which participants performed daily genital swabs for HSV
detection by real-time HSV DNA PCR and reported symptoms. Initiation or
discontinuation of ART was at the discretion of participants’
healthcare providers.
Results:
6,425 daily genital swabs were obtained from 45 persons (38 men and 7
women) during 105 swabbing sessions. During the three sessions, 67%, 74%,
and 92% of persons were on ART. HSV was detected on 26.5% of days in men and
22.3% of days in women. The overall rates of genital HSV shedding were 19.4%
of days in persons not on ART, 30.2% in persons within 90 days of ART
initiation, and 23.3% in persons on ART for longer than 90 days. After
initiation of ART, HSV shedding decreased by 2% per month, or 23% per year
(RR 0.98 /month on ART, p=0.0003 in adjusted analysis). This finding was
consistent after including consideration of HIV viral load and CD4
count.
Conclusions:
HSV shedding increased significantly shortly after ART initiation but
decreased with time on prolonged ART.