Blood-borne and sexually transmitted infections: a cross-sectional study in a Swiss prison

Trends in sexually transmitted infection diagnoses among people in prison in England, 2018-2023: analysis of surveillance and pilot seroprevalence data

PURPOSE

People in prison face a disproportionate risk of sexually transmitted infections (STIs), but there is a paucity of evidence on trends in STIs in prisons in England. This study aims to describe trends in chlamydia test-positivity and syphilis prevalence by using two different methodologies in prison settings.

DESIGN/METHODOLOGY/APPROACH

This study used routinely collected chlamydia surveillance data reported by all primary diagnostic laboratories in England from 2018 to 2022 to identify tests undertaken in prisons. Separately, this study used data from a pilot syphilis serology pilot study of four prisons in England. A descriptive analysis was undertaken to describe chlamydia test-positivity and syphilis seroprevalence by demographic characteristics.

FINDINGS

Between 2018 and 2022, the number of chlamydia tests carried out in prisons increased by 2.0% (17,177-17,514) whilst the number of positive diagnoses decreased by 12.0% (957-840). The overall test-positivity in 2022 was 4.8% (840/17,514) which was marginally lower than that of the community; test-positivity was highest in 15-19 year-olds. Overall, syphilis prevalence was 3.9% (43/1064). Prevalence was highest in the women's prison site at 6.4% 27/398). The range in male prison sites was between 0.5% and 3.5%.

ORIGINALITY/VALUE

Use of two methods enabled us to better understand the burden of STIs in a vulnerable population. Chlamydia test positivity was marginally lower than community levels but still indicated a high burden of infection, in particular for the 15-24 age group. Syphilis prevalence was high across all age groups in prisons, highlighting the need for more systematic assessment of STIs in prisons to allow for earlier identification and treatment of infections.

Improving implementation of needle and syringe programmes to expand, scale up, and sustain evidence-based prevention interventions for HIV and hepatitis C in prisons

The 1990 resolution by the UN General Assembly committed member states to provide health-care equity for people in prison, who are included in the global goals to control HIV and eliminate hepatitis C virus (HCV) by 2030. WHO has set ambitious HCV elimination targets by including people who inject drugs (PWID), yet has not prioritised PWID who are incarcerated, a substantial population who have or are at risk for HCV infection. Human rights principles of health-care equity stipulate that "prisoners should enjoy the same standards of health care that are available in the community, without discrimination on the grounds of their legal status". Globally, only nine countries provide prison-based needle and syringe programmes (PNSPs), essential evidence-based interventions to holistically reduce the harms from drug use, of which only three countries extend reach to all prisons. Even where available, these services are accessed by few participants. PNSPs are recommended as an essential element of an effective HIV and HCV prevention strategy in prisons, and studies have shown that they are key to achieving HCV elimination in carceral settings. This Viewpoint, based primarily on unpublished data from key country-level stakeholders and expert opinion, highlights our perspective that implementation factors related to PNSP delivery in diverse settings likely contribute to low adoption and use of these services by PWID in prisons compared with in the community. However, successful expansion of these evidence-based interventions will depend on political commitment, national surveillance and monitoring programmes, and state-of-the-art implementation science methods, where inputs from multilevel stakeholders should guide improved implementation. Policy makers are urged to create and support opportunities to scale up PNSPs within countries where they exist and expand them to other countries where they are needed to solidify years of commitment towards the 2030 HCV elimination goals.

Examining risk factors for HIV infection amongst male inmates in Peruvian prisons: a cross-sectional study using national prisoner census data

INTRODUCTION

The prison population in Peru exceeds 90,000 individuals, many of whom face conditions that increase their vulnerability to human immunodeficiency virus (HIV), such as exposure to illicit substances, risky sexual behaviors, and discrimination.

MATERIALS AND METHODS

A secondary analysis was carried out, using data from the 2016 national prison population census to identify factors associated with HIV risk in the incarcerated population of Peru. A total of 75,613 male inmates from prisons across the country participated, answering a comprehensive questionnaire consisting of 405 items. Multivariable regression Poisson models were used to calculate adjusted prevalence ratios (aPR) and 95% confidence intervals (CI).

RESULTS

Our findings revealed significant associations between HIV risk and sexual orientation, with homosexual (aPR: 5.50; CI: 2.62-11.56) and bisexual (aPR: 4.92; 95% CI: 2.26-10.72) individuals being at higher risk. Additionally, a history of tuberculosis (aPR: 2.82; 95% CI: 1.75-4.56) and sexually transmitted diseases (aPR 48.14; 95% CI: 31.07-74.56) were strongly correlated with increased HIV risk. Marital status, specifically being widowed, divorced, separated, or single, also showed a statistically significant association with HIV infection in both raw and adjusted regression models.

DISCUSSION

Our study highlights important risk factors for HIV infection among the male prison population in Peru. The identified associations will inform the development of effective health policies aimed at identifying and addressing HIV transmission within the country's prisons. Furthermore, our findings provide a basis for future research in similar settings with a comparable male prison population profile.

HBV in Italian Women's Jail: An Underestimated Problem?

BACKGROUND

There is little information regarding the hepatitis B virus (HBV), vaccination status, and hepatitis B exposure in Italian women's jails. We aimed to describe the HBV exposure and HBs antibody (anti-HBs) protection levels in female prisoners.

MATERIAL AND METHODS

A retrospective multicentric study was performed in Italian prisons from 2021 to 2023. Univariate and multivariate analyses were conducted to identify risk factors for HBc antibody (anti-HBc) seropositivity and non-protective anti-HBs titer.

RESULTS

We included 156 patients. The median age was 41.0 (IQR 34.0-48.0). Of the studied subjects, 31 (19.9%) had anti-HBc positive titer. Two women were HBsAg positive. In the multivariate analysis, older age [OR 1.06 (CI 1.01-1.11), p = 0.011], North-Eastern European [OR 11.67 (3.29-41.30), p < 0.001] and African origin [OR 6.92 (CI 1.51-31.60), p = 0.013], and drug use [OR 6.55 (CI 1.96-21.9), p = 0.002] were risk factors for HBV exposure. Thirty-seven (32%) women had no history of HBV vaccination. Forty-four (38%) had an anti-HBs non-protective titer. In the multivariate analysis, North-Eastern European origin [OR 4.55 (CI 1.19-17.50), p = 0.027] was associated with unprotective anti-HBs titer.

CONCLUSION

Our results show both the low prevalence of HBV and protection in female prisoners. Age, North-Eastern European and African origin, and drug use have a role in exposure risk to HBV.

Effectiveness of interventions to reduce sexually transmitted infections and blood-borne viruses in incarcerated adult populations: a systematic review protocol

OBJECTIVE

This review will identify, synthesize, and make recommendations regarding the effectiveness of interventions to reduce sexually transmitted infections (STIs) and blood-borne viruses (BBVs) in incarcerated adult settings.

INTRODUCTION

High-risk sexual behaviors, intravenous drug use, piercing, and tattooing are well documented within incarceration environments. Despite the World Health Organization's Global Health Sector Strategy on Sexually Transmitted Infections 2016-2021 and the Global Health Sector strategies on, respectively, HIV, viral hepatitis, and sexually transmitted infections for the period 2022-2030, STI rates within adult incarceration environments continue to rise. Identifying and implementing best-practice interventions to prevent and manage STIs and BBVs will aid infection reduction in correctional settings. The review results will inform the development of educational programs, health promotion, and policies and procedures to improve health outcomes for incarcerated populations.

INCLUSION CRITERIA

This review will consider studies in any language from any adult incarceration facility. Studies set in juvenile facilities or detention centers will be excluded. Any intervention for preventing or reducing STI and/or BBV transmission will be included.

METHODS

This review will follow the JBI methodology for systematic reviews of effectiveness. Databases to be searched will include PubMed, CINAHL (EBSCO), Ovid Library, PsycINFO (EBSCO), Cochrane CENTRAL, and Scopus. Two independent reviewers will screen titles and abstracts and assess full-text citations against the inclusion criteria. Methodological quality will be appraised using JBI's standardized critical appraisal instruments. Where possible, studies will be pooled using meta-analysis. Where statistical pooling is not possible, findings will be presented in narrative format. Certainty of evidence will be ascertained using the GRADE approach.

REVIEW REGISTRATION

PROSPERO CRD42022325077.

Chronic hepatitis C virus infections in Switzerland in 2020: Lower than expected and suggesting achievement of WHO elimination targets

In this multi-method study, we investigated the prevalence of chronic infections with the hepatitis C virus (HCV) in Switzerland in 2020, and assessed Switzerland's progress in eliminating HCV as a public health problem by 2030 with regard to the World Health Organization (WHO) criteria targeting infections acquired during the preceding year ('new transmissions') and HCV-associated mortality. Based on a systematic literature review, the reappraisal of a 2015 prevalence analysis assuming 0.5% prevalence among the Swiss population and data from many additional sources, we estimated the prevalence among subpopulations at increased risk and the general population. For new transmissions, we evaluated mandatory HCV notification data and estimated unreported new transmissions based on subpopulation characteristics. For the mortality estimate, we re-evaluated a previous mortality estimate 1995-2014 based on new data on comorbidities and age. We found a prevalence of ≤0.1% among the Swiss population. Discrepancies to the 2015 estimate were explained by previous (i) underestimation of sustained virologic response numbers, (ii) overestimation of HCV prevalence among PWID following bias towards subgroups at highest risk, (iii) overestimation of HCV prevalence among the general population from inclusion of high-risk persons and (iv) underestimation of spontaneous clearance and mortality. Our results suggest that the WHO elimination targets have been met 10 years earlier than previously foreseen. These advancements were made possible by Switzerland's outstanding role in harm-reduction programmes, the longstanding micro-elimination efforts concerning HIV-infected MSM and nosocomial transmissions, little immigration from high-prevalence countries except Italian-born persons born before 1953, and wealth of data and funding.

Hepatitis C prevalence in incarcerated settings between 2013–2021: a systematic review and meta-analysis

Background

The introduction of highly effective direct-acting antiviral therapy has changed the hepatitis C virus (HCV) treatment paradigm. However, a recent update on HCV epidemiology in incarcerated settings is necessary to accurately determine the extent of the problem, provide information to policymakers and public healthcare, and meet the World Health Organization's goals by 2030. This systematic review and meta-analysis were performed to determine the prevalence of HCV Ab and RNA in incarcerated settings.

Methods

For this systematic review and meta-analysis, we searched PubMed, Embase, Scopus, and Web of Science for papers published between January 2013 and August 2021. We included studies with information on the prevalence of HCV Ab or RNA in incarcerated settings. A random-effects meta-analysis was done to calculate the pooled prevalence and meta-regression to explore heterogeneity.

Results

Ninety-two unique sources reporting data for 36 countries were included. The estimated prevalence of HCV Ab ranged from 0.3% to 74.4%. HCV RNA prevalence (available in 46 sources) ranged from 0% to 56.3%. Genotypes (available in 19 sources) 1(a) and 3 were most frequently reported in incarcerated settings. HCV/HIV coinfection (available in 36 sources) was highest in Italy, Estonia, Pakistan, and Spain. Statistical analysis revealed that almost all observed heterogeneity reflects real differences in prevalence between studies, considering I² was very high in the meta-analysis.

Conclusions

HCV in incarcerated settings is still a significant problem with a higher prevalence than in the general population. It is of utmost importance to start screening for HCV (Ab and RNA) in incarcerated settings to give clear, reliable and recent figures to plan further treatment. This is all in the context of meeting the 2030 WHO targets which are only less than a decade away.

Trial registration

PROSPERO: CRD42020162616

Supplementary Information

The online version contains supplementary material available at 10.1186/s12889-022-14623-6.

HCV disease burden and population segments in Switzerland

BACKGROUND

Switzerland has made strides towards hepatitis C virus elimination, but as of 2019, elimination was not guaranteed. However, political interest in viral hepatitis has been increasing. We sought to develop a better understanding of Switzerland's progress towards HCV elimination and the profile of remaining HCV-RNA-positive patients.

METHODS

A previously described Markov model was updated with recent diagnosis and treatment data and run to generate new forecasts for HCV disease burden. Two scenarios were developed to evaluate HCV morbidity and mortality under the status quo and a scenario that achieves the Swiss Hepatitis Strategy Elimination targets. Next, an analysis was conducted to identify population segments bearing a high burden of disease, where future elimination efforts could be directed.

RESULTS

At the beginning of 2020, an estimated 32 100 viremic infections remained in Switzerland (0.37% viremic prevalence). Adult (≥18 years of age) permanent residents born abroad represented the largest subpopulation, accounting for 56% of HCV infections. Thirteen countries accounted for ≥60% of viremic infections amongst permanent residents born abroad, with most people currently residing in Zurich, Vaud, Geneva, Bern, Aargau and Ticino. Amongst Swiss-born HCV-RNA-positive persons, two-thirds had a history of IDU, corresponding to 33% of total infections.

CONCLUSIONS

In Switzerland, extra efforts for diagnosis and linkage to care are warranted in foreign-born populations and people with a history of drug use. Population-level measures (eg increasing the number of providers, increase screening) can identify patients who may have otherwise fallen through the gaps or avoided care because of stigma.

A multicentre interventional study to assess blood-borne viral infections in Belgian prisons

BACKGROUND

Prevalence data on viral hepatitis B (HBV), hepatitis C (HCV), and HIV infection in prison are often scarce or outdated. There is currently no systematic screening for these blood-borne viral infections (BBV) in Belgian prisons. There is an urgency to assess the prevalence of these BBV to inform policymakers and public healthcare.

METHODS

This was a multicentre, interventional study to assess the prevalence of BBV using opt-in screening in prisons across Belgium, April 2019 - March 2020. Prisoners were tested using a finger prick and BBV risk factors were assessed using a questionnaire. A generalized linear mixed model was used to investigate the association between the various risk factors and HCV.

RESULTS

In total, 886 prisoners from 11 Belgian prisons were screened. Study uptake ranged from 16.9 to 35.4% in long-term facilities. The prevalence of HCV antibodies (Ab), hepatitis B surface antigen (Ag) and HIV Ab/Ag was 5.0% (44/886), 0.8% (7/886), and 0.2% (2/886). The adjusted odds for HCV Ab were highest in prisoners who ever injected (p < 0.001; AOR 24.6 CI 95% (5.5-215.2). The prevalence of detectable HCV RNA in the total cohort was 2.1% (19/886). Thirteen (68.4%) prisoners were redirected for follow-up of their HCV infection.

CONCLUSIONS

Opt-in testing for viral hepatitis B, C and HIV was relatively well-accepted in prisons. Compared with the general population, prisoners have a higher prevalence of infection with BBV, especially for HCV. Systematic screening for these BBV should be recommended in all prisons, preferably using opt-out to optimize screening uptake.

TRIAL REGISTRATION

Retrospectively registered at clinical trials NCT04366492 April 29, 2020.

Injecting substance use in prisons in the United States: a case for needle exchange programs

Despite efforts to prevent illicit substance use in prisons, inmates in many countries still have access to them, along with associated paraphernalia. In the United States, a large proportion of people in prison are there due to drug-related charges. The secretive nature of illicit substance use in prison and the opposition to implementing harm reduction interventions such as needle exchange programs have put prisoners who engage in such practices at high risk for infectious bloodborne diseases. While states have their reasons for opposing the implementation of needle exchange programs in prisons, evidence shows that keeping illicit substances out of prisons is difficult. Programs allowing needle exchange programs are currently illegal in the United States. The authors propose that states reconsider their stance on needle exchange programs as the implementation of such programs in several penal institutions worldwide have proven to be successful in reducing bloodborne diseases and promoting and preserving the health of prisoners. By prohibiting needle exchange programs in prison states are not only denying prisoners' access to health care but are also violating prisoner's right to health as recommended by international instruments on prisoner rights. This article advocates for the implementation of needle exchange programs in the United States prison system with a focus on states. It does this by drawing attention to the effectiveness of such programs around the world and to the fact that incarceration does not necessarily reduce illicit substance use.

Educational technologies on sexually transmitted infections for incarcerated women

OBJECTIVE

to analyze in the scientific literature the educational technologies on sexually transmitted infections used in health education for incarcerated women.

METHOD

an integrative review carried out by searching for articles in the following databases: Scopus, Cumulative Index of Nursing and Allied Health, Education Resources Information Center, PsycInFO, Medical Literature Analysis and Retrieval System Online, Latin American Literature in Health Sciences, Cochrane, and the ScienceDirect electronic library. There were no language and time restrictions. A search strategy was developed in PubMed and later adapted to the other databases.

RESULTS

a total of 823 studies were initially identified and, after applying inclusion and exclusion criteria, eight articles were selected. Most of them were developed in the United States with a predominance of randomized clinical trials. The technologies identified were of the printed materials type, isolated or associated to simulators of genital organs, videos, and games.

CONCLUSION

the technologies on sexually transmitted infections used in health education for incarcerated women may contribute to adherence to the prevention of this serious public health problem in the context of deprivation of liberty.

Modelling the Impact and Cost-effectiveness of Extended Hepatitis C Virus Screening and Treatment with Direct-acting Antivirals in a Swiss Custodial Setting

BACKGROUND

Hepatitis C virus (HCV) among people living in detention (PLD) is typically high in many countries including Switzerland, where it is estimated that the HCV prevalence rate is between 5.7% and 6.2%. In Switzerland, the existing screening strategy involves routine screening of PLD who indicate they are from HCV high-risk populations based on questionnaire responses upon entry to the detention center, rather than an offer to screen all PLD.

METHODS

A cost-effectiveness analysis from a Swiss healthcare provider perspective was conducted by combining a 5-year decision tree screening model with results from a Markov model of HCV treatment outcomes. This model explored the cost-effectiveness of increased HCV screening to cover all PLD compared to the current approach, using a standard test package and subsequent treatment with a single-tablet regimen in Swiss custodial settings. Sensitivity and scenario analyses examined the uncertainty of results.

RESULTS

At the willingness-to-pay threshold of 100 000 Swiss Francs (CHF) per quality-adjusted life-year (QALY), comprehensive general screening was cost-effective compared to current risk-based screening, with a base case incremental cost-effectiveness ratio of CHF 14 312 per QALY. The net monetary benefit of screening the whole PLD population was CHF 23 298 046 and CHF 4298 per person. The proportion of PLD tested was predicted to increase from 13.6% to 67.0% under comprehensive screening.

CONCLUSION

The results showed that comprehensive screening strategies in detention centers in Switzerland can be cost-effective, with the probabilistic sensitivity analysis estimating an 82.3% probability of cost-effectiveness.

Seroprevalence of markers of hepatitis C virus exposure and associated factors in adults aged 18-39 years in the Arctic Russian city of Arkhangelsk: a cross-sectional study

Hepatitis C, caused by the hepatitis C virus (HCV), is a major public health issue in Russia. The aim of our study was to assess the seroprevalence of markers of HCV exposure and factors associated with HCV seropositivity among the general population aged 18–39 years in the city of Arkhangelsk, Northwest Russia. A social research agency applied a quota sampling method to recruit study participants using cell phone numbers. All participants (n = 1243) completed a self-administered questionnaire and provided a blood sample. Sixty-five participants (5.2%, 95% confidence interval [CI] 4.9–5.5) tested positive for HCV IgM+G antibodies, and of these, 55 (84.6%) did not know that they were exposed to HCV. In multivariable logistic regression analysis, HCV seropositivity was significantly associated with older age, a history of injecting drug use, and having ever received a blood transfusion. To reach the goal of the World Health Organisation’s Global Health Sector Strategy on Viral Hepatitis, regional preventive programmes should include measures to reduce injecting drug use as well as scaling up harm-reduction and treatment programs for drug addicts.

Infectious diseases in post-trial detention and comparisons with pre-trial detention: A study in Geneva, Switzerland

BACKGROUND

Prevalence rates of infectious diseases in post-trial prisons have been scarcely investigated. Due to the specific characteristics of these prison populations, these prevalence rates may differ from pre-trial prisons and more information is needed for developing adequate prevention and treatment interventions. This study compared prevalence rates of hepatitis B virus (HBV), hepatitis C virus (HCV), susceptibility to varicella zoster virus (VZV) and measles in pre- and post-trial detention.

METHODS

Data were collected in Geneva post-trial prisons among males (n=250), including serological tests, demographics, and risk factors, and were compared to those of the Geneva pre-trial prison (n=273).

RESULTS AND CONCLUSIONS

Incarcerated men in post-trial detention shared a disproportionate burden of infectious diseases compared to community (chronic HBV: 5.9%, HVC: 2.8%, susceptibility to VZV: 5.9%, to measles: 4.7%). Susceptibility to VZV and prevalence rate of HCV were lower in post-trial prisons (p=.034 and p=.080). Prevalence rates of infectious diseases in prison should be interpreted in light of the prison population's characteristics. Screening and treatment should be promoted in all types of prison settings. Since overcrowding and turnover of pre-trial prisons restrict the access to screening, prevention and treatment of infectious diseases, interventions are crucial in post-trial prisons.

Access to unauthorized hepatitis C generics: Perception and knowledge of physicians, pharmacists, patients and non-healthcare professionals

OBJECTIVES

Hepatitis C virus (HCV) causes both acute and chronic infection, which can potentially develop into cirrhosis and liver cancer. Healthcare systems are struggling to finance costly direct-acting antiviral agents through public funding for uninsured patients, despite the unprecedented high cure rates of these agents. Vulnerable populations are at higher risk of HCV infection. The personal importation scheme is based on the legal right to import any unauthorized generics for personal use. This study was designed to assess the knowledge and perceptions of stakeholders on unauthorized generics.

METHODS

We conducted an anonymous online survey based on the fictitious situation of a patient diagnosed with HCV who lacked mandatory health insurance and personal financial resources.

RESULTS

We obtained a sample of 781 respondents: 445 physicians, 77 pharmacists, 51 patients and 207 non-healthcare professionals. We found that only 36% and 58% of respondents believe that the quality and efficacy, respectively, of unauthorized generics are equivalent to their corresponding brand. An overwhelming majority (98%) favoured quality control upon arrival, and 31% felt they could recognize fraudulent websites. A total of 79% expressed support for financial assistance for vulnerable patients, and support among physicians was 83%.

CONCLUSIONS

Overall, the limited knowledge of the efficacy and quality of unauthorized generics, despite evidence in peer-reviewed literature, contrasts with the overwhelmingly positive attitudes toward financial assistance for personal import. This finding emphasizes the need for clearer information on imported generics and the potential safety provided by buyers' club schemes to complete the WHO agenda of eradicating viral hepatitis by 2030 within otherwise excluded vulnerable populations.