The impact of STI test results and face-to-face consultations on subsequent behavior and psychological characteristics

The Best Predictor of Future Behavior May Be the Past: Exploring Behavior Change in Men Who Have Sex with Men Using Pre-exposure Prophylaxis in the Netherlands

Pre-exposure prophylaxis (PrEP) use prevents HIV transmission, and may lead to changes in sexual behavior. We aimed to explore sexual behavior over time, and identify predictors of behavior change in men who have sex with men (MSM) using PrEP at sexual health centers (SHC) in the Netherlands. We used longitudinal data from the national STI surveillance database (January 2018-June 2021) of HIV-negative MSM who first initiated PrEP in the national PrEP pilot. We modelled behavior change after PrEP initiation, and identified predictors of behavior change using multi-state Markov models. The probability of stopping group sex, chemsex, use of poppers or erection stimulants, and having ≥ 10 partners in the past 6 months among included MSM (n = 4,349, n SHC visits = 21,820) was higher compared to the probability of starting with these behaviors after PrEP initiation. However, MSM who used condoms consistently during anal sex had a high probability of changing to inconsistent condom use (0.8) at the next visit, and inconsistent condom users mostly remained inconsistent (0.8). First visit, visiting the SHC more often (vs. regular), and STI diagnosis were predictors of starting or continuing with most of the behaviors associated with increased risk. Behavior change was less likely among older participants (> 34 compared to ≤ 34 years), and during COVID-19 lockdown and post-lockdown periods compared to pre-COVID-19. Although condom use decreased over time, transitions towards stopping with other behaviors associated with increased likelihood of acquiring an STI after PrEP initiation were common. This may suggest increased sexual empowerment, especially among younger MSM. Predictors of behavior change may help to identify MSM who are likely to start with or continue to engage in these behaviors in the near future and to provide suitable and timely counselling about behavior and PrEP adherence.

Cultural Predictors of Self-Esteem Among Black Women With Criminal Justice Involvement and Herpes Simplex Virus

Black women have disproportionately alarming HSV-2 infection rates yet receive little attention in sexual health literature. Using a strengths-based resilience framework, this study sought to determine culturally relevant protective predictors of self-esteem for Black women who are justice-involved and have HSV-2. The authors conducted secondary data analysis on data from the "Black Women in the Study of Epidemics (B-WISE) Project," a longitudinal prospective study investigating health disparities and health services utilization among Black women with justice involvement. At baseline, N = 151 Black women with HSV-2 who were incarcerated or on probation completed survey measures assessing self-esteem, ethnic identity affirmation and belonging, perceived social support, and John Henryism Active Coping. Hierarchical linear regression analyses revealed ethnic identity affirmation and belonging and John Henryism Active Coping were significant predictors of self-esteem at 6-month follow-up. Implications are provided for current health professionals.

Point-of-Care Sexually Transmitted Infection Testing Improves HIV Preexposure Prophylaxis Initiation in Pregnant Women in Antenatal Care in Cape Town, South Africa, 2019 to 2021

Background

Pre-exposure prophylaxis (PrEP) programs present a platform for diagnostic STI testing in low- and middle-income countries, and availability of targeted STI testing has been hypothesized to influence PrEP use. We evaluated the association of STI testing modality and PrEP uptake among pregnant women in antenatal care.

Methods

We enrolled pregnant, HIV-uninfected women (≥16 years) at their first antenatal visit with follow-up through 12 months postpartum. Women were offered oral PrEP and tested for Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) using a point-of-care (Cepheid, August 2019–November 2020) or laboratory-based (Thermofisher, December 2020–October 2021) test. We compared the proportion of women initiating and continuing PrEP by STI test adjusting for confounders.

Results

We evaluated 1194 women (median age=26 years [IQR:22–31]) with a STI result (46% POC and 54% laboratory-based). The prevalence of any STI was the same in POC-tested (28%) and laboratory-tested (28%) women — 25% versus 23% for CT (p-value=0.35) and 7% versus 9% for NG (p-value=0.11). Mean time from testing to result was 0 for POC and 26 days for laboratory testing and mean time from testing to treatment was 3 for POC and 38 days for laboratory testing. Receiving a POC STI test was associated with higher PrEP initiation compared to women receiving a laboratory-based test (90% versus 78%; adjusted odds ratio=2.1; 95% CI:1.5–2.9), controlling for age, gravidity, STI diagnosis, intimate partner violence, gestational age, employment, HIV risk perception, and cohabiting status.

Conclusion

POC STI testing, offering same-day results and treatment initiation, may increase PrEP initiation among pregnant women in antenatal care.

A study of HIV-uninfected pregnant women in South Africa found that women offered point-of-care STI testing had a higher odds of initiating HIV pre-exposure prophylaxis than women offered laboratory-based testing.

Impact of Rapid Testing for Gonorrhea and Chlamydia in an Urban Pediatric Emergency Department

PURPOSE

To determine the impact of rapid testing for gonorrhea (NG) and chlamydia (CT) on accuracy of treatment in adolescents in the pediatric emergency department (ED).

METHODS

Retrospective study of adolescents tested for NG and CT in the pediatric ED before and after implementation of rapid testing. Treatment during initial visit, availability of test results prior to discharge, and number of follow-up phone calls made with test results were compared. Appropriate treatment was defined per Centers for Disease Control and Prevention 2015 guidelines as monotherapy for CT and dual therapy for NG. Descriptive statistics were used to compare groups.

RESULTS

Rapid testing improved treatment accuracy with 522 (79.3%) patients treated appropriately in the rapid testing group compared to 478 (64.7%) patients in the batched testing group (p < .001). Inaccurate treatment was more common in the batch testing group among those who tested negative (p < .001). Among those who tested positive for NG and/or CT, phone calls were made to 54 (47.8%) patients in the rapid testing group and 129 (84.3%) patients in the batched testing group to discuss positive test results (p < .001).

CONCLUSION

Compared to batched testing, rapid testing is associated with improved accuracy of treatment of NG and CT in the pediatric ED setting. Additionally, rapid testing is associated with decreased number of phone calls to discuss positive test results.

Patterns of sexual behaviour associated with repeated chlamydia testing and infection in men and women: a latent class analysis

BACKGROUND

Adolescents and young adults are at higher risk of acquiring Chlamydia trachomatis infection (chlamydia), so testing is promoted in these populations. Studies have shown that re-testing for chlamydia is common amongst them. We investigated how sexual risk behaviour profiles are associated with repeated testing for chlamydia.

METHODS

We used baseline data from a cohort of 2814 individuals recruited at an urban STI -clinic. We applied latent class (LC) analysis using 9 manifest variables on sexual behaviour and substance use self-reported by the study participants. We fitted ordered logistic regression to investigate the association of LC membership with the outcomes repeated testing during the past 12 months and lifetime repeated testing for chlamydia. Models were fit separately for men and women.

RESULTS

We identified four LCs for men and three LCs for women with increasing gradient of risky sexual behaviour. The two classes with the highest risk among men were associated with lifetime repeated testing for chlamydia: adjOR = 2.26 (95%CI: 1.50-3.40) and adjOR = 3.03 (95%CI: 1.93-4.74) as compared with the class with lowest risk. In women, the class with the highest risk was associated with increased odds of repeated lifetime testing (adjOR =1.85 (95%CI: 1.24-2.76)) and repeated testing during past 12 months (adjOR = 1.72 (95%CI: 1.16-2.54)). An association with chlamydia positive test at the time of the study and during the participant's lifetime was only found in the male highest risk classes.

CONCLUSION

Prevention messages with regard to testing for chlamydia after unprotected sexual contact with new/casual partners seem to reach individuals in highest risk behaviour classes who are more likely to test repeatedly. Further prevention efforts should involve potentially more tailored sex-specific interventions taking into consideration risk behaviour patterns.

Time for change: Transitions between HIV risk levels and determinants of behavior change in men who have sex with men

As individual sexual behavior is variable over time, the timing of interventions might be vital to reducing HIV transmission. We aimed to investigate transitions between HIV risk levels among men who have sex with men (MSM), and identify determinants associated with behavior change. Participants in a longitudinal cohort study among HIV-negative MSM (Amsterdam Cohort Studies) completed questionnaires about their sexual behavior during biannual visits (2008-2017). Visits were assigned to different HIV risk levels, based on latent classes of behavior. We modelled transitions between risk levels, and identified determinants associated with these transitions at the visit preceding the transition using multi-state Markov models. Based on 7,865 visits of 767 participants, we classified three risk levels: low (73% of visits), medium (22%), and high risk (5%). For MSM at low risk, the six-month probability of increasing risk was 0.11. For MSM at medium risk, the probability of increasing to high risk was 0.08, while the probability of decreasing to low risk was 0.33. For MSM at high risk, the probability of decreasing risk was 0.43. Chemsex, erection stimulants and poppers, high HIV risk perception, and recent STI diagnosis were associated with increased risk at the next visit. High HIV risk perception and young age were associated with decreasing risk. Although the majority of MSM showed no behavior change, a considerable proportion increased HIV risk. Determinants associated with behavior change may help to identify MSM who are likely to increase risk in the near future and target interventions at these individuals, thereby reducing HIV transmission.

Where to go to in chlamydia control? From infection control towards infectious disease control

OBJECTIVES

The clinical and public health relevance of widespread case finding by testing for asymptomatic chlamydia infections is under debate. We wanted to explore future directions for chlamydia control and generate insights that might guide for evidence-based strategies. In particular, we wanted to know the extent to which we should pursue testing for asymptomatic infections at both genital and extragenital sites.

METHODS

We synthesised findings from published literature and from discussions among national and international chlamydia experts during an invitational workshop. We described changing perceptions in chlamydia control to inform the development of recommendations for future avenues for chlamydia control in the Netherlands.

RESULTS

Despite implementing a range of interventions to control chlamydia, there is no practice-based evidence that population prevalence can be reduced by screening programmes or widespread opportunistic testing. There is limited evidence about the beneficial effect of testing on pelvic inflammatory disease prevention. The risk of tubal factor infertility resulting from chlamydia infection is low and evidence on the preventable fraction remains uncertain. Overdiagnosis and overtreatment with antibiotics for self-limiting and non-viable infections have contributed to antimicrobial resistance in other pathogens and may affect oral, anal and genital microbiota. These changing insights could affect the outcome of previous cost-effectiveness analysis.

CONCLUSION

The balance between benefits and harms of widespread testing to detect asymptomatic chlamydia infections is changing. The opinion of our expert group deviates from the existing paradigm of 'test and treat' and suggests that future strategies should reduce, rather than expand, the role of widespread testing for asymptomatic chlamydia infections.

Modelling the impact of tailored behavioural interventions on chlamydia transmission

Behavioural interventions tailored to psychological characteristics of an individual can effectively achieve risk-reducing behaviour. The impact of tailored interventions on population-level chlamydia prevalence is unknown. We aimed to assess the impact on overall chlamydia prevalence five years after the introduction of an intervention aimed at increasing self-efficacy, social norms, attitudes and intentions towards condom use (i.e., condom intervention), and an intervention aimed at increasing health goals and decreasing impulsiveness (i.e., impulsiveness intervention). A pair model, informed by longitudinal psychological and behavioural data of young heterosexuals visiting sexual health centers, with susceptible-infected-susceptible structure was developed. The intervention effect was defined as an increased proportion of each subgroup moving to the desired subgroup (i.e., lower risk subgroup). Interventions tailored to subgroup-specific characteristics, assuming differential intervention effects in each subgroup, more effectively reduced overall chlamydia prevalence compared to non-tailored interventions. The most effective intervention was the tailored condom intervention, which was assumed to result in a relative reduction in chlamydia prevalence of 18% versus 12% in the non-tailored scenario. Thus, it is important to assess multiple psychological and behavioural characteristics of individuals. Tailored interventions may be more successful in achieving risk-reducing behaviour, and consequently, reduce chlamydia prevalence more effectively.