Journal
SEXUALLY TRANSMITTED INFECTIONS
Volume 87, Issue 5, Pages 406-411Publisher
B M J PUBLISHING GROUP
DOI: 10.1136/sti.2010.048496
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Funding
- UK Medical Research Council (MRC) [G0400456]
- Wellcome Trust [066688]
- UK Department for International Development
- MRC [G0400456, G0700837] Funding Source: UKRI
- Medical Research Council [G0700837, G0400456] Funding Source: researchfish
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Objectives Few studies have examined the frequency and duration of genital herpes simplex virus (HSV) shedding in sub-Saharan Africa. This study describes HSV shedding patterns among a sample of HSV-2-seropositive women enrolled in a placebo-controlled trial of HSV suppressive therapy (acyclovir 400 mg twice a day) in Tanzania. Methods Trial participants were invited to participate in a substudy involving 12 clinic visits over 4 weeks. At each visit, cervical, vaginal and external skin swabs were taken and analysed for HSV DNA using inhouse real-time PCR. Results HSV shedding was mainly subclinical (90%; 57/63 shedding days in the placebo arm). The most frequent shedding site was the external skin, but HSV DNA was detected from all three sites on 42% (27/63) of shedding days. In HIV-negative women, HSV DNA was detected on 3% (9/275) of days in the acyclovir versus 11% (33/309) in the placebo arm, while in HIV-positive women, detection was on 14% (23/160) versus 19% (30/155) of days, respectively. Conclusions HSV shedding was common, varying greatly by individual. Shedding rates were similar to studies in African and non-African settings. Among HIV-negative women, shedding rates were lower in the acyclovir arm; however, acyclovir did not substantially impact on HSV shedding in HIV-positive women.
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