Differences in STI/HIV Burden and Sexual Health Care-Seeking Behavior Among First- and Second-Generation Migrant and Western-Born Male Sex Workers Who Have Sex With Men in the Netherlands: A Retrospective Cohort Study.

Background: Globally, migrant sex workers have a higher burden of sexually transmitted infections (STI)/human immunodeficiency virus (HIV). This large study aimed to assess demographics, STI/HIV burden, and sexual health care-seeking behavior of first-generation migrant and second-generation migrant male sex workers who have sex with men (MSW-MSM) versus Western-born MSW-MSM.

Methods: Coded STI clinic consultations (n = 6970) from 3116 individual MSW-MSM attending any Dutch STI clinic between 2016 and 2021 were included.

Who is providing HIV diagnostic testing? Comparing HIV testing by general practitioners and sexual health centres in five regions in the Netherlands, 2011-2018.

Objectives: General practitioners (GPs) and sexual health centres (SHCs) are the main providers of HIV testing and diagnose two-thirds of HIV infections in the Netherlands. We compared regional HIV testing and positivity by GPs versus SHCs to gain insight into strategies to improve HIV testing, to enable timely detection of HIV infections.

Methods: Laboratory data (2011-2018) on HIV testing by GPs and SHCs in five Dutch regions with varying levels of urbanisation were evaluated.

Sexual behaviour and STI testing among Dutch swingers: A cross-sectional internet based survey performed in 2011 and 2018.

Background: Swingers, heterosexuals who, as couples, practice mate swapping or group sex with other couples or heterosexual singles, are at risk for sexually transmitted infections (STIs). Therefore, the aim of this study was to assess changes in sexual behaviour and STI testing behaviour, as well as predictors of STI testing.

Methods: Two cross-sectional studies were performed, using the same internet survey in 2011 and 2018.

Sexually transmitted infections in male heterosexual Dutch clients who visited German cross-border female sex workers; a 3 year retrospective study.

Background: Some male heterosexual clients prefer to visit a cross-border Female Sex Worker (FSW) because of cheaper sex and unsafe sex practices, and may therefore be at risk for sexually transmitted infections (STI). The objective of this study was to assess whether having commercial cross-border sex is an independent risk factor for being diagnosed with a STI.

Methods: An observational retrospective study was performed using data of 8 Dutch STI clinics bordering Germany, between 2011 and 2013.

Prevalence of drug use during sex among swingers and perceived benefits and risks - a cross-sectional internet survey in the Netherlands.

Objectives: Drug use during sex has been associated with sexually transmitted infections (STI). While a growing body of research has investigated drug use during sex among men who have sex with men, data in swingers is limited. Swingers are heterosexual couples who have sex with others and singles who have sex with these couples.

Determinants of frequent and infrequent STI testing and STI diagnosis related to test frequency among men who have sex with men in the eastern part of the Netherlands: a 6-year retrospective study.

Objective: Men who have sex with men (MSM) remain vulnerable to sexually transmitted infections (STIs) and are advised to be tested at least twice a year. The aim of this study was to assess the determinants of test frequency and their associations with an STI diagnosis.

Design: A 6-year retrospective study.

Repeat Chlamydia trachomatis testing among heterosexual STI outpatient clinic visitors in the Netherlands: a longitudinal study.

Background: Chlamydia infections are common in both men and women, are often asymptomatic and can cause serious complications. Repeat testing in high-risk groups is therefore indicated. In the Netherlands, guidelines on repeat chlamydia testing differ between testing facilities, and knowledge on repeat testing behaviour is limited.