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Purpose <p>Genital Herpes Simplex Virus-2 (HSV-2) epidemic is highly active worldwide and can be associated with severe morbidity and mortality. This study aimed to estimate the prevalence and incidence of HSV-2 infection among a vulnerable population of active heroin injectors in Hai Phong, Vietnam, and identify associated risk factors.</p> Method <p>Associations between HSV-2 infection and socio-demographic characteristics and sexual behaviors were explored in a univariable analysis of seroprevalence. Risk factors were defined using a multivariable Poisson regression accounting for time of follow-up.</p> Results <p>HSV-2 seroprevalence at baseline was 20.8% [95%CI: 17.8–22.2] for the 1281 men people who inject drugs (PWID), and 67.4% [95%CI: 60.1–74.1] for the 184 women PWID. For HSV-2 incidence, we accumulated a follow-up time of 1156.0 and 85.9 years for men and women, respectively. Standardised incidence rate was 4 [95%CI: 2.2–7.5] and 17.5 [95%CI: 5.7–53.8] infections per 100 person-years for men and women, respectively. Factors independently associated with HSV-2 seroconversion were HIV and injecting drug use for 5–10 years for men, and declared an uncontrolled HIV viral load and the use of street methadone.</p> Conclusion <p>High HSV-2 prevalence and incidence among PWID in Hai Phong point out the burden of sexually transmissible infections in this population. Together these results advocate for a reinforcement of HSV-2 care and prevention in this population and identify PWID as future beneficiaries of upcoming therapeutic/prophylactic vaccines.</p>

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High prevalence and incidence of HSV-2 among people who inject drugs in Hai Phong, Vietnam, and risk factors associated with seroconversion

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月22日

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  • Morgana D’Ottavi,
  • Ilenia Scialabba,
  • Duong Thi Huong,
  • Hoang Thi Giang,
  • Pham Minh Khue,
  • Vu Hai Vinh,
  • Roselyne Vallo,
  • Laurent Michel,
  • Delphine Rapoud,
  • Catherine Quillet,
  • Nham Thi Tuyet Thanh,
  • Juliette Bouniol,
  • Khuat Thi Hai Oanh,
  • Jonathan Feelmyer,
  • Philippe Vande Perre,
  • Didier Laureillard,
  • Don Des Jarlais,
  • Nicolas Nagot,
  • Jean-Pierre Molès

摘要

Purpose

Genital Herpes Simplex Virus-2 (HSV-2) epidemic is highly active worldwide and can be associated with severe morbidity and mortality. This study aimed to estimate the prevalence and incidence of HSV-2 infection among a vulnerable population of active heroin injectors in Hai Phong, Vietnam, and identify associated risk factors.

Method

Associations between HSV-2 infection and socio-demographic characteristics and sexual behaviors were explored in a univariable analysis of seroprevalence. Risk factors were defined using a multivariable Poisson regression accounting for time of follow-up.

Results

HSV-2 seroprevalence at baseline was 20.8% [95%CI: 17.8–22.2] for the 1281 men people who inject drugs (PWID), and 67.4% [95%CI: 60.1–74.1] for the 184 women PWID. For HSV-2 incidence, we accumulated a follow-up time of 1156.0 and 85.9 years for men and women, respectively. Standardised incidence rate was 4 [95%CI: 2.2–7.5] and 17.5 [95%CI: 5.7–53.8] infections per 100 person-years for men and women, respectively. Factors independently associated with HSV-2 seroconversion were HIV and injecting drug use for 5–10 years for men, and declared an uncontrolled HIV viral load and the use of street methadone.

Conclusion

High HSV-2 prevalence and incidence among PWID in Hai Phong point out the burden of sexually transmissible infections in this population. Together these results advocate for a reinforcement of HSV-2 care and prevention in this population and identify PWID as future beneficiaries of upcoming therapeutic/prophylactic vaccines.