Evaluation of Chlamydia Partner Notification Practices and Use of the "Let Them Know" Website by Family Planning Clinicians in Australia: Cross-Sectional Study

Digital interventions for STI and HIV partner notification: a scoping review

BACKGROUND

Partner notification (PN) is key to the control of sexually transmitted infections (STIs) and human immunodeficiency virus (HIV). Digital interventions have been used to facilitate PN. A scoping review was conducted to describe the interventions used, user preferences and acceptability of digital PN interventions from patient and partner perspectives.

METHODS

A systematic literature search was conducted of eight databases for articles published in English, available online with digital PN outcome data. Articles were assessed using the Mixed Methods Appraisal Tool. Quantitative and qualitative data were synthesised and analysed using thematic analysis.

RESULTS

Twenty-six articles met the eligibility criteria. Articles were heterogeneous in quality and design, with the majority using quantitative methods. Nine articles focused solely on bacterial STIs (five on syphilis; four on chlamydia), one on HIV, two on syphilis and HIV, and 14 included multiple STIs, of which 13 included HIV. There has been a shift over time from digital PN interventions solely focusing on notifying partners, to interventions including elements of partner management, such as facilitation of partner testing and treatment, or sharing of STI test results (between index patients and tested sex partners). Main outcomes measured were number of partners notified (13 articles), partner testing/consultation (eight articles) and treatment (five articles). Relationship type and STI type appeared to affect digital PN preferences for index patients with digital methods preferred for casual rather than established partner types. Generally, partners preferred face-to-face PN.

CONCLUSION

Digital PN to date mainly focuses on notifying partners rather than comprehensive partner management. Despite an overall preference for face-to-face PN with partners, digital PN could play a useful role in improving outcomes for certain partner types and infections. Further research needs to understand the impact of digital PN interventions on specific PN outcomes, their effectiveness for different infections and include health economic evaluations.

Determinants of Dutch public health professionals' intention to use digital contact tracing support tools: A cross-sectional online questionnaire study

Contact tracing (CT) can be a resource intensive task for public health services. To alleviate their workload and potentially accelerate the CT-process, public health professionals (PHPs) may transfer some tasks in the identification, notification, and monitoring of contacts to cases and their contacts themselves, using 'digital contact tracing support tools' (DCTS-tools). In this study, we aimed to identify determinants of PHPs' intention to use DCTS-tools. Between February and April 2022, we performed a cross-sectional online questionnaire study among PHPs involved in CT for COVID-19 in the Netherlands. We built three random forest models to identify determinants of PHPs' intention to use DCTS-tools for the identification, notification, and monitoring of contacts, respectively. The online questionnaire was completed by 641 PHPs. Most respondents had a positive intention towards using DCTS-tools for the identification (64.5%), notification (58%), and monitoring (55.2%) of contacts. Random forest models were able to correctly predict the intention of 81%, 80%, and 81% of respondents to use DCTS-tools for the identification, notification, and monitoring of contacts, respectively. Top-determinants of having a positive intention are the anticipated effect of DCTS-tools on the feasibility and efficiency of CT (speed, workload, difficulty), the degree to which PHPs anticipated that cases and contacts may find it pleasant and may be willing to participate in CT using DCTS-tools, and the degree to which PHPs anticipated that cases and contacts are sufficiently supported in CT when using DCTS-tools. Most PHPs have a positive intention to involve cases and their contacts in the identification, notification, and monitoring stages of the CT-process through DCTS-tools. The identified top-determinants should be prioritized in the (future) development and implementation of DCTS-tools in public health practice. Citizens' perspectives on the use of DCTS-tools should be investigated in future research.

Notification of STI test results by text messaging: Why do patients refuse? Cross-sectional study in a Parisian sexual health centre

Text messaging has been used to notify patients of results after sexually transmitted infection (STI) testing. This study aimed to characterise the population who refused notification of results by short message services (SMS) and to explore their reasons for refusing. From January to August 2018, 1180 patients coming for STI testing in a Parisian sexual health centre were offered SMS notification of their results, completed a self-administered questionnaire and were included in the study. Factors associated with refusal of SMS notification were explored using logistic regression models. Reasons for refusal were analysed following a qualitative content analysis methodology. In the study population, 7.3% [95% CI 5.8-8.8] of patients refused SMS notification. In the multivariate logistic regression model, male gender and older age were associated with refusal, as were non-French nationality, having forgone health care for economic reasons and being unemployed. Qualitative analysis showed that preferring face-to-face medical contact (32%) and anxiety about the test result (29%) were the main reasons given by patients for refusal. Socially disadvantaged patients may have more limited access to technology and be less at ease using it in a health context. Preference for face-to-face medical contact may reflect the need for human support in vulnerable populations.

Intensified partner notification and repeat testing can improve the effectiveness of screening in reducing Chlamydia trachomatis prevalence: a mathematical modelling study

BACKGROUND

The Australian Chlamydia Control Effectiveness Pilot (ACCEPt) was a cluster randomised controlled trial designed to assess the effectiveness of annual chlamydia testing through general practice in Australia. The trial showed that testing rates increased among sexually active men and women aged 16-29 years, but after 3 years the estimated chlamydia prevalence did not differ between intervention and control communities. We developed a mathematical model to estimate the potential longer-term impact of chlamydia testing on prevalence in the general population.

METHODS

We developed an individual-based model to simulate the transmission of Chlamydia trachomatis in a heterosexual population, calibrated to ACCEPt data. A proportion of the modelled population were tested for chlamydia and treated annually at coverage achieved in the control and intervention arms of ACCEPt. We estimated the reduction in chlamydia prevalence achieved by increasing retesting and by treating the partners of infected individuals up to 9 years after introduction of the intervention.

RESULTS

Increasing the testing coverage in the general Australian heterosexual population to the level achieved in the ACCEPt intervention arm resulted in reduction in the population-level prevalence of chlamydia from 4.6% to 2.7% in those aged 16-29 years old after 10 years (a relative reduction of 41%). The prevalence reduces to 2.2% if the proportion retested within 4 months of treatment is doubled from the rate achieved in the ACCEPt intervention arm (a relative reduction of 52%), and to 1.9% if the partner treatment rate is increased from 30%, as assumed in the base case, to 50% (a relative reduction of 59%).

CONCLUSION

A reduction in C. trachomatis prevalence could be achieved if the level of testing as observed in the ACCEPt intervention arm can be maintained at a population level. More substantial reductions can be achieved with intensified case management comprising retesting of those treated and treatment of partners of infected individuals.

RiskRadar: development and pilot results of a technical intervention targeting combination prevention regarding HIV, viral hepatitis, sexually transmitted infections and tuberculosis

Background

The HIV pandemic impacts the lives of millions and despite the global coordinated response, innovative actions are still needed to end it. A major challenge is the added burden of coinfections such as viral hepatitis, tuberculosis and various sexually transmitted infections in terms of prevention, treatment and increased morbidity in individuals with HIV infection. A need for combination prevention strategies, tailored to high-risk key populations arises and technology-based interventions can be a valuable asset. The COVID-19 pandemic challenged the delivery of existing services and added stress to existing public health and clinical structures but also highlighted the potential of exploiting technical solutions for interventions regarding infectious diseases. In this paper we report the design process, results and evaluation findings from the pilots of ‘RiskRadar’—a web and mobile application aiming to support combination prevention, testing and linkage to care for HIV, viral hepatitis, various sexually transmitted infections and tuberculosis.

Methods

RiskRadar was developed for the INTEGRATE Joint Action’s aim to improve, adapt and pilot innovative digital tools for combination prevention. RiskRadar was designed iteratively using informed end-user-oriented approaches. Emphasis was placed on the Risk Calculator that enables users to assess their risk of exposure to one or more of the four disease areas, make informed decisions to seek testing or care and adjust their behaviours ultimately aiming to harm/risk reduction. RiskRadar has been piloted in three countries, namely Croatia, Italy and Lithuania.

Results

RiskRadar has been used 1347 times across all platforms so far. More than 90% of users have found RiskRadar useful and would use it again, especially the Risk Calculator component. Almost 49.25% are men and 29.85% are in the age group of 25–34. The application has scored 5.2/7 in the User Experience Questionnaire, where it is mainly described as “supportive” and “easy-to-use”. The qualitative evaluation of RiskRadar also yielded positive feedback.

Conclusions

Pilot results demonstrate above average satisfaction with RiskRadar and high user-reported usability scores, supporting the idea that technical interventions could significantly support combination prevention actions on Sexually Transmitted Infections.

Using electronic communication technologies for improving syphilis partner notification in Chile: healthcare providers' perspectives - a qualitative case study

Background Partner notification (PN) in Australia has been studied and improved in recent decades. International researchers have highlighted the use of electronic communication technologies to assist PN (Internet partner notification or IPN). Using the Australian experience as an example, the aim of this study is to explore clinicians' perspectives on the use of specialised websites, such as Let them know, to facilitate PN in the Chilean context.

METHODS

Semi-structured interviews were conducted with healthcare providers (HCPs) in 14 primary health care centres and six sexual health units located at two regional Health Services, as well as with key informants from different backgrounds. Interviews were transcribed verbatim and QSR International's NVivo 11 PRO Software was used for cross-case thematic analysis, which followed an inductive approach. Selected quotes were translated from Spanish to English. Codes and themes were reviewed by the research team.

RESULTS

Most participants were unaware of IPN and demonstrated interest. Many agreed this could be a feasible strategy considering the high use of mobile technologies and the Internet in Chile. Participants' primary concerns around this approach were confidentiality, privacy and efficacy, given the local cultural context. The use of a counsellor to offer professional support and guidance was identified as essential to strengthen PN in Chile.

CONCLUSION

The use of IPN could be an alternative PN strategy for Chile. However, the involvement of local staff and further research to explore patients' perceptions and preferences will be essential in tailoring interventions.

Partner notification and retesting for Chlamydia trachomatis and Neisseria gonorrhoeae: a case-note review in New Zealand primary care

INTRODUCTION Bacterial sexually transmitted infections (STIs) contribute to a significant burden of ill-health despite being easy to diagnose and treat. STI management guidelines provide clinicians with evidence-based guidance on best-practice case management. AIM To determine the extent of adherence to STI management guidelines for partner notification, follow up and testing for reinfection following diagnosis of Chlamydia trachomatis and Neisseria gonorrhoeae. METHODS Retrospective review of electronic patient records for individuals diagnosed with chlamydia or gonorrhoea in eight primary care clinics in Wellington, New Zealand. At each clinic, 40 clinical records were reviewed (320 in total). Outcome measures were: overall numbers (%) of cases with documented evidence of reason for testing, sexual history, treatment, advice, partner notification and follow up. Partner notification outcomes were: n (%) with evidence of partner notification discussion and n (%) with partners advised, tested and treated. Proportions retested between 6 weeks and 6 months and n (%) positive on retesting were also determined. RESULTS Presenting features and treatment were generally well documented. Recent sexual history including number of partners was documented for half of cases reviewed (159/320). Partner notification discussion was documented for 74% (237/320) of cases, but only 24.4% (78/320) had documentation on numbers of partners notified and 17% (54/320) on numbers of partners treated. Testing for reinfection between 6 weeks and 6 months occurred for 24.7% (79/320), of whom 19% (15/79) re-tested positive. CONCLUSIONS This research suggests there are gaps in important aspects of patient care following bacterial STI diagnosis - a factor that may be perpetuating our high rates of infection. A more systematic approach will be needed to ensure people diagnosed with an STI receive the full cycle of care in line with best practice guidelines.

Chlamydiae from Down Under: The Curious Cases of Chlamydial Infections in Australia

In Australia, the most researched and perhaps the most successful chlamydial species are the human pathogen Chlamydia trachomatis, animal pathogens Chlamydia pecorum and Chlamydia psittaci. C. trachomatis remains the leading cause of sexually transmitted infections in Australians and trachoma in Australian Indigenous populations. C. pecorum is globally recognised as the infamous koala and widespread livestock pathogen, whilst the avian C. psittaci is emerging as a horse pathogen posing zoonotic risks to humans. Certainly not innocuous, the human infections with Chlamydia pneumoniae seem to be less prevalent that other human chlamydial pathogens (namely C. trachomatis). Interestingly, the complete host range for C. pecorum and C. psittaci remains unknown, and infections by other chlamydial organisms in Australian domesticated and wildlife animals are understudied. Considering that chlamydial organisms can be encountered by either host at the human/animal interface, I review the most recent findings of chlamydial organisms infecting Australians, domesticated animals and native wildlife. Furthermore, I also provide commentary from leading Australian Chlamydia experts on challenges and future directions in the Chlamydia research field.

Epidemiology and prevention of sexually transmitted infections in men who have sex with men at risk of HIV

Since 2012, the increasingly widespread promotion and uptake of HIV treatment as prevention and pre-exposure prophylaxis in men who have sex with men has been associated with increased sexually transmitted infections (STIs). However, numbers of STI cases have been rising for more than 20 years and the introduction of biomedical HIV interventions cannot explain the majority of the rises in STIs. The increases appear to have occurred mostly because of gradual changes in behaviour over many years, coupled in some settings with more condomless anal intercourse, and as a result of the increased screening for previously undetected asymptomatic infections. If control of STIs is to be improved, then a far greater emphasis on increased use of existing effective STI control strategies will be required, in addition to the investigation of new interventions. Central to effective STI control is accessible clinical care and screening services, which are currently inadequate in most settings. Insufficient action carries a risk of increased STI epidemics, including of newly resistant organisms.