Hongjaisee S. auteur aut IRD Khamduang W. auteur aut IRD Sripan P. auteur aut IRD Choyrum S. auteur aut IRD Thepbundit V. auteur aut IRD Ngo-Giang-Huong Nicole auteur aut IRD Tangmunkongvorakul A. auteur aut IRD text journalArticle eng text/pdf reformatted digital access Objectives: To determine the prevalence of hepatitis B surface antigen (HBsAg) and antibody to hepatitis delta virus (anti-HDV) and associated factors among migrant sex workers in Chiangmai, Thailand. Methods: This cross-sectional study was conducted at various sexual entertainment venues in Chiangmai, Thailand, in 2019. Consenting participants were interviewed using a questionnaire, and plasma was tested for hepatitis B virus (HBV) markers (DiaSorin, Italy) and anti-HDV antibody (DIA.PRO Diagnostic Bioprobes, Italy), if HBsAg-positive. Associations between HBsAg positivity or HDV antibody and potential factors were examined using univariable and multivariable logistic regression analysis. Results: A total of 396 migrant sex workers, half of them female, were recruited between February and September 2019. Their median age was 25 years (interquartile range 22-30 years) and 95% were Burmese. Overall, HBsAg prevalence was 11.4%; 8.1% in females and 14.7% in males (Chi-square, p = 0.040). One-third were still susceptible to HBV. No HBsAg-positive participants had anti-HDV antibodies. HBsAg positivity was associated with being male (adjusted odds ratio (aOR) 3.01, 95% confidence interval (CI) 1.25-7.68, p = 0.014), having attended school (aOR 4.50, 95% CI 1.26-15.98, p = 0.020), being separated/divorced/widowed (aOR 5.77, 95% CI 1.48-22.52, p = 0.012), and having unprotected sex (aOR 3.38, 95% CI 1.31-8.71, p = 0.012). Conclusions: In this young population, higher HBsAg prevalence in males may be related to sexual transmission, indicating the need for HBV screening programs linked with HBV prevention and care. specialized Migrants Sex workers HBV HDV Prevalence Thailand THAILANDE CHIANG MAI 050 052 108 100 247-254 2020 1201-9712 https://www.documentation.ird.fr/hor/fdi:010080898 10.1016/j.ijid.2020.09.004 1201-9712 [F B010080898] https://www.documentation.ird.fr/hor/fdi:010080898 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers21-02/010080898.pdf IRD - Base Horizon / Pleins textes 2021-03-10 2021-03-11 fdi:010080898 fre