RT Journal Article SR Electronic T1 Human alphaherpesvirus 2 (HSV-2) among female sex workers from Brazil: cross-sectional study using respondent-driven sampling JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 461 OP 464 DO 10.1136/sextrans-2019-054400 VO 97 IS 6 A1 Lyana Rodrigues Pinto Lima A1 Nathália Alves Araujo Almeida A1 Marco Aurélio Pereira Horta A1 Vinicius S Belo A1 Alexandre Santos da Silva A1 Gina Jonasson Mousquer Capelin A1 Fernanda Rodas Pires Fernandes A1 Marco Antonio Moreira Puga A1 Grazielli Rocha de Rezende A1 Tayana Serpa Ortiz Tanaka A1 Lisie Souza Castro A1 Ana Rita Coimbra Motta-Castro A1 Vanessa Salete de Paula YR 2021 UL http://sti.bmj.com/content/97/6/461.abstract AB Objective Female sex workers (FSWs) are vulnerable to human alphaherpesvirus 2 (HSV-2) infection due to their high numbers of sexual partners. The objective of this study was to evaluate the seroprevalence and risk behaviours associated with HSV-2.Methods A cross-sectional study was conducted in Mato Grosso do Sul, Brazil. A total of 376 FSWs were recruited by respondent-driven sampling (RDS) methodology and answered an epidemiological questionnaire. Blood samples were collected to test for HSV-2 antibodies using commercial ELISA and for HSV-2 DNA using real-time PCR.Results The seropositivity was 47.3% (178/376) for HSV-2 IgG and 10.1% (38/376) for HSV-2 IgM. HSV-2 viraemia was detected in two infected FSWs with primary infections. In bivariate and multivariate analyses, the OR for HSV-2 IgG increased with age (OR=2.53–7.90, OR=2.66–6.37) and the number of sexual partners (OR=2.30–3.25). On the other hand, daily alcohol consumption (OR=0.10) and the use of condoms during the last intercourse (OR=0.47) were protective factors against HSV-2 acquisition.Conclusion Despite the impact of FSWs in public health policies with the dissemination of sexually transmitted infections, there have been few studies performed regarding the prevalence of HSV-2 in Brazil, making it difficult to implement any control or preventative measures. The results produced here using an RDS methodology demonstrated a high prevalence, risk behaviours and primary infection among the FSWs. These results reinforce the need to implement control and preventative measures for HSV-2 infection in this population.All data relevant to the study are included in the article.