Let's Talk About B: Barriers to Hepatitis B Screening and Vaccination Among Asian and South Asian Immigrants in British Columbia

Seroprevalence and risk factors of hepatitis B virus infection among healthcare workers in Africa: A systematic review and meta-analysis

BACKGROUND

Healthcare workers are at an increased risk of hepatitis B virus infection due to potential exposure to blood and other infectious materials. The infection can lead to acute liver disease and chronic liver complications such as cirrhosis and liver cancer. It can impact workforce health, leading to absenteeism, and increased healthcare costs. Hence, this study aimed to determine the seroprevalence and risk factors of the hepatitis B virus among healthcare workers in Africa.

MATERIALS AND METHODS

The protocol for this systematic review and meta-analysis was registered on PROSPERO with the registration number CRD42024556654. Literatures were searched from PubMed, Science Direct, HINARI, African Online Journal, Google Scholar, Google, Semantic Scholar, and Directory of Open Access Journals using relevant search terms. The process of searching relevant articles was completed on 1 August 2024. Studies with a quality evaluation indicator score of 50% or above were included in this study. The random effect model was used to measure the pooled seroprevalence and associated factors of hepatitis B virus infection among healthcare workers in Africa. The finding of the meta-analysis was presented using forest plots with a 95% confidence interval.

RESULT

Among 26 studies selected for meta-analysis, 6983 participants were included. The inclusion of 26 studies showed that the pooled prevalence of hepatitis B virus infection among healthcare workers was 17.2% (95% CI: 8.36, 26.04). Healthcare workers diagnosed with liver disease were 5.01 times more likely to having hepatitis B virus infection compared to those who were not diagnosed (POR = 5.01: 95% CI; 2.25,7.77). In addition, healthcare workers who did not receive technical training were 2.70 times more likely to having HBV infection than those who received training (POR = 2.70:95% CI; 1.10, 4.30). Furthermore, healthcare workers aged 40 years and above were 2.53 times more likely to having hepatitis B virus infection than young healthcare workers (POR = 2.53: 95% CI; 1.29,3.77).

CONCLUSION

The pooled prevalence of hepatitis B virus infection was high. Previously diagnosed liver diseases, the absence of technical training, and the age of healthcare workers were the factors influencing the pooled prevalence of HBV infection among healthcare workers. Hence, providing appropriate medical follow-up for healthcare workers diagnosed with liver disease, comprehensive training and education, and early detection and diagnosis of healthcare workers aged 40 years and above are the most important interventions to prevent the risk of hepatitis B virus infection.

Navigating Living Kidney Donation and Transplantation Among South Asian Canadians: The ACTION Project

RATIONALE & OBJECTIVE

South Asian (SA) Canadians with kidney failure have a 50%-77% lower likelihood of kidney transplant and are less likely to identify potential living donors (LDs). This study aimed to identify health system-, patient-, and community-level barriers and facilitators for accessing LD kidney transplantation in the SA community to inform the development of health system- and community-level interventions to address barriers.

STUDY DESIGN

Qualitative study.

SETTING & PARTICIPANTS

20 SA recipients of an LD or deceased-donor kidney transplant, 10 SA LDs, and 41 general SA community members.

ANALYTICAL APPROACH

In-depth multilingual interviews were conducted with recipients and LDs. Gender-, language-, and age-stratified focus groups were conducted with general SA community members. Summative content analysis was used to analyze the data.

RESULTS

Hesitancy in approaching potential donors, fear about the health of potential LDs, information gaps, language barriers, and challenges evaluating out-of-country donors were highlighted as significant barriers by recipients, and financial concerns and information gaps were identified by donors. Cultural barriers in the SA community were highlighted by donors, recipients, and community members as critical factors when considering donation and transplant; women and elderly SA Canadians highlighted nuanced challenges. Participants reported generally a favorable perception of their health care teams, citing SA representation in the teams as important to providing culturally and linguistically sensitive care.

LIMITATIONS

Limited geographic, race, and cultural representation and reliance on virtual data collection.

CONCLUSIONS

This study highlights several culturally relevant barriers to donation and transplant that are potentially modifiable through patient-, health system-, and community-focused engagement and education.

Characterising the effectiveness of social determinants of health-focused hepatitis B interventions: a systematic review

Social determinants of health are important in designing effective interventions for hepatitis B virus (HBV) infection. This systematic review characterises equity-oriented, social determinants of health-focused HBV interventions, and describes their effectiveness in terms of the prevention, care, or treatment of HBV in high-income countries. We searched electronic databases for central concepts of 'HBV', 'equity', 'social determinants of health', 'intervention', and 'Organization for Economic Co-operation and Development (OECD) countries'. Screening and data abstraction were conducted independently by two reviewers. Data were abstracted from 66 studies; articles with a comparative study design (n=36) were included in the narrative synthesis, highlighting social determinants of health domains of interventions, HBV-relevant health outcomes, and extra-health social determinants of health effects (ie, those effects that extend beyond health outcomes). Synthesis aligned with six emergent themes corresponding to HBV prevention and care: knowledge and education, diagnosis and screening, immunisation, care initiation, engagement with clinical care and treatment, and upstream prevention. Studies presented a heterogeneous array of HBV-relevant health outcomes. Most interventions were tailored for social determinants of health domains of race, ethnicity, culture, and language; drug use; and socioeconomic status. Across the themes, at least two-thirds of interventions showed comparative effectiveness for addressing HBV. Extra-health social determinants of health outcomes were observed for two studies. Considerable diversity in population-level approaches was observed regarding intervention goals and effectiveness; most interventions were effective at enhancing the prevention, care, or treatment of HBV.

Vaccine Hesitancy among Immigrants: A Narrative Review of Challenges, Opportunities, and Lessons Learned

(1) Background: Vaccination reluctance is a major worldwide public health concern as it poses threats of disease outbreaks and strains on healthcare systems. While some studies have examined vaccine uptake within specific countries, few provide an overview of the barriers and trends among migrant groups. To fill this knowledge gap, this narrative review analyzes immunization patterns and vaccine hesitancy among immigrant populations. (2) Methods: Four researchers independently evaluated the quality and bias risk of the 18 identified articles using validated critical appraisal tools. (3) Results: Most studies focused on vaccine hesitancy among migrants in the United States and Canada, with a higher COVID-19 vaccine reluctance than native-born residents. Contributing factors to this hesitancy include demographics, cultural views, obstacles to healthcare access, financial hardship, and distrust in health policies. Additionally, immigrants in North America and Europe face unfair vaccine challenges due to misinformation, safety concerns, personal perspectives, language barriers, immigration status, and restricted healthcare access. (4) Conclusions: Tailored vaccine education programs and outreach campaigns sensitive to immigrants' diversity should be developed to address this issue. It is also important to investigate community-specific obstacles and assess the long-term sustainability of current efforts to promote vaccination among marginalized migrant groups. Further research into global immunization disparities among immigrant populations is crucial.

Factors associated with knowledge and awareness of Hepatitis B in individuals of Chinese descent: Results from a mass point of care testing and outreach campaign in Toronto, Canada

Background

Migrants from hepatitis B virus (HBV) endemic regions are at high risk of having chronic infection. Despite this, HBV knowledge and awareness programming, and low-barrier screening methods such as point of care (POC) testing, among this group have yet to become routine.

Methods

We conducted a mass HBV POC screening and knowledge and awareness campaign for individuals of Chinese descent in Toronto, Canada. POC screening was administered, then participants completed a knowledge questionnaire. Logistic regression identified associations between demographic factors and participants' level of HBV knowledge.

Results

From 2015 to 2018, 33 outreach events resulted in 891 individuals completing testing and the knowledge questionnaire. Individuals averaged 64.4 years old. Most, 62% (N = 552), were female, and 73.6% (N = 656) have been in Canada for <30 years. The average questionnaire score was 70.7% correct, with 65.2% (N = 581) demonstrating a high level of HBV knowledge. Post-secondary education (OR: 2.19, 95% CI: 1.41, 3.39), income of $50,000 to <$75,000 (OR: 2.74, 95% CI: 1.39, 5.43), and having familial history of HBV (OR: 1.72, 95% CI: 1.06, 2.78) were associated with high knowledge. The observed prevalence of HBV was 1.5%, with 13 individuals testing positive on the POC test and confirmatory laboratory testing.

Conclusions

Improving knowledge and awareness of HBV is critical to empowering people, especially migrants who experience barriers to care, to pursue vaccination, testing, and treatment. Combining knowledge outreach and POC test campaigns, enabled discussion and screening for HBV with large numbers of people, and can be tailored for optimal effectiveness for specific groups.

Improving hepatitis B screening and vaccination rates in a veterans affairs resident-based primary care clinic

INTRODUCTION

In 2022, the Advisory Committee on Immunization Practices (ACIP) updated its recommendation regarding hepatitis B vaccination and advised vaccination for all adults aged 19-59 regardless of risk factors and those 60 years and older with risk factors. Adults 60 years and older without known risk factors may also be vaccinated. Our project aimed to spread awareness of the updated hepatitis B virus (HBV) vaccination guideline and improve HBV vaccination rates among veterans in a resident-based primary care clinic.

METHODS

Preintervention data were collected from October to December 2021 and post intervention data were collected from March to May 2022; patients seen in the clinic during these months were included. Patients were considered immune against HBV if they had positive anti-hepatitis B surface antigen and susceptible to infection if the hepatitis B panel was negative. Interventions included educating each resident group regarding current guidelines via multifaceted modalities. In addition, a reminder for checking hepatitis B status was embedded in the veterans affairs (VA) electronic medical record.

RESULTS

In the preintervention period from October to December 2021, a total of 1242 veterans were seen. 532 veterans had previous screening for hepatitis B immunity in the chart with 378 veterans negative for hepatitis B surface antibody. Of those 378 veterans, only 35 were vaccinated against hepatitis B during the time period studied. In the postintervention period, 1174 veterans were seen and 559 had prior hepatitis B immunity screening with 430 veterans negative for hepatitis B surface antibody. Of the 430 veterans with no immunity against HBV, 123 received hepatitis B vaccination during the time period studied, which is an increase of greater than 20% in the number of veterans vaccinated.

DISCUSSION

Our data suggest that HBV vaccination rate was suboptimal among the veteran population. A low-cost intervention could be beneficial in integrating new vaccination guidelines in the VA standard of care. Increased awareness of the updated HBV vaccination guideline would likely help to achieve the goal of full vaccination among the veteran population.

A Systematic Review of Behaviour Change Techniques within Interventions to Increase Vaccine Uptake among Ethnic Minority Populations

COVID-19 caused significant morbidity and mortality amongst ethnic minority groups, but vaccine uptake remained lower than non-minoritised groups. Interventions to increase vaccine uptake among ethnic minority communities are crucial. This systematic review synthesises and evaluates behaviour change techniques (BCTs) in interventions to increase vaccination uptake in ethnic minority populations. We searched five databases and grey literature sources. From 7637 records identified, 23 studies were included in the review. Interventions were categorised using the Behaviour Change Wheel (BCW) and Behaviour Change Taxonomy v1. Vaccines included influenza, pertussis, tetanus, diphtheria, meningitis and hepatitis. Interventions were primarily delivered in health centres/clinics and community settings. Six BCW intervention functions and policy categories and 26 BCTs were identified. The main intervention functions used were education, persuasion and enablement. Overall, effective interventions had multi-components and were tailored to specific populations. No strong evidence was observed to recommend specific interventions, but raising awareness and involvement of community organisations was associated with positive effects. Several strategies are used to increase vaccine uptake among ethnic minority communities; however, these do not address all issues related to low vaccine acceptance. There is a strong need for an increased understanding of addressing vaccine hesitancy among ethnic minority groups.

Immigrants' Experience of Health Care Access in Canada: A Recent Scoping Review

Existing literature has reported inequities in access to Canadian health care services among immigrants. The aim of this scoping review was (a) to explore research regarding Canadian immigrants' unique experiences in accessing healthcare, and (b) to provide suggestions for future research and programming considering the identified immigrant-specific service gaps in health care. We searched MEDLINE, CINAHL, EMBASE, and Google Scholar, following the Arksey and O'Malley (2005) framework. The review's findings suggest unmet health care access needs specific to immigrants in Canada, with the most common access barriers including communication, socioeconomic, and cultural barriers. The scoping review expands on the immigrant health care experiences and accessibility factors through a thematic analysis. Findings suggest that developing community-based programming, improving training for health care providers in culturally competent care, and policies that address the social determinants of health can improve health care accessibility among immigrants.

Global Epidemiology and Genetics of Hepatocellular Carcinoma

Hepatocellular carcinoma (HCC) is one of the leading cancers worldwide. Classically, HCC develops in genetically susceptible individuals who are exposed to risk factors, especially in the presence of liver cirrhosis. Significant temporal and geographic variations exist for HCC and its etiologies. Over time, the burden of HCC has shifted from the low-moderate to the high sociodemographic index regions, reflecting the transition from viral to nonviral causes. Geographically, the hepatitis viruses predominate as the causes of HCC in Asia and Africa. Although there are genetic conditions that confer increased risk for HCC, these diagnoses are rarely recognized outside North America and Europe. In this review, we will evaluate the epidemiologic trends and risk factors of HCC, and discuss the genetics of HCC, including monogenic diseases, single-nucleotide polymorphisms, gut microbiome, and somatic mutations.

A qualitative investigation of facilitators and barriers to accessing COVID-19 vaccines among Racialized and Indigenous Peoples in Canada

Structural and systemic inequalities can contribute to susceptibility to COVID-19 disease and limited access to vaccines. Recognizing that Racialized and Indigenous Peoples may experience unique barriers to COVID-19 vaccination, this study explored early COVID-19 vaccine accessibility, including barriers and potential solutions to vaccine access, for these communities in Canada. We conducted semi-structured interviews about challenges to accessing COVID-19 vaccination with Racialized and Indigenous Peoples, including linguistic minorities and newcomers, in Spring 2021, just as COVID-19 vaccines were becoming more widely available in Canada. Participants were purposely selected from respondents to a Canadian national online survey. Three researchers analyzed the interviews for emergent themes using a descriptive content analysis approach in NVivo. At the time of the interview, interview participants (N = 27) intended to receive (n = 15) or had received (n = 11) at least one vaccine dose, or did not state their status (n = 1). Participants described multiple barriers to COVID-19 vaccination that they personally experienced and/or anticipated they or others could experience - including technology requirements, language barriers, lack of identification documentation, and travel challenges - as well as related solutions. These were organized into three broad categories: 1) COVID-19 disease and vaccination information, 2) vaccination booking procedures, and 3) vaccination sites. These structural and systemic barriers during the initial months of vaccine rollout substantially restricted participants' COVID-19 vaccination access, even when they were eager to get vaccinated, and should be addressed early in vaccine rollouts to facilitate optimal uptake for everyone everywhere.

Association of culturally competent care with influenza vaccination coverage in the United States

BACKGROUND

Cultural minority groups in the United States have lower vaccination rates or worse influenza-related outcomes. Culturally competent care, which aims to engage the social, cultural, and linguistic needs of all patients, may address some of these disparities.

OBJECTIVE

We investigate how self-reported measures of culturally competent care is associated with influenza vaccination rates in the United States.

METHODS

The National Health Interview Survey (NHIS) 2017 was queried for respondents asked a set of questions which assessed respondents' access to culturally competent care in the past year. The outcome of interest was self-reported receipt of the annual influenza vaccine. Sample-weighted multivariable logistic regressions estimated the adjusted odds ratios and 95 % confidence intervals (95 %CI) of influenza vaccination with response to the cultural competency survey questions as the dependent variable of interest. Subsequent marginal modeling predicted the adjusted vaccination rates among cultural minorities (racial/ethnic minorities, LGBTQ + adults, foreign-born individuals, and non-English speakers) and respondents with high-risk comorbidities for worse influenza outcomes. Models were adjusted for other known determinants of vaccination coverage.

RESULTS

20,303 sample adults were included in the analyses. There were significantly higher odds of influenza vaccination among respondents who were "always" or "most of the time" treated with respect by their providers (aOR 1.53, 95 %CI [1.23-1.90], P < 0.001), given easy-to-understand information (aOR 1.37, 95 %CI [1.19-1.58], P < 0.001), asked about their opinions or beliefs about their care (aOR 1.29, 95 %CI [1.19-1.39], P < 0.001), and seen by providers who shared or understood their culture (aOR 1.15 95 %CI [1.01-1.30], P = 0.03), compared to their counterparts who responded with "some" or "none of the time" to the same survey questions. Higher adjusted influenza vaccination rates were seen among multiple racial/ethnic groups, LGBTQ + adults, foreign-born individuals, non-English speakers, and individuals with high-risk comorbidities who reported positive responses to the cultural competency survey questions.

CONCLUSIONS

We demonstrate a positive association between self-reported frequency of access to culturally competent care and receipt of the annual influenza vaccine. These findings support future efforts to evaluate vaccination outcomes among patients who receive components of culturally competent care, such as linguistically appropriate services, race-concordant healthcare workforce, and community engagement.

A Rapid Review of Interventions to Increase Hepatitis B Testing, Treatment, and Monitoring among Migrants Living in Australia

Chronic hepatitis B (CHB) disproportionately affects migrants with low health literacy and help-seeking behaviour living in high-income countries. Evidence of effective interventions is required to increase hepatitis B (HBV) testing, treatment, and monitoring. Available evidence from Medline, Embase, Scopus, Google, and Google Scholar was identified, collated, and synthesised. Inclusion criteria included grey and peer-reviewed literature published in English between January 2012 and December 2021. Systematic reviews and meta-analyses were excluded. Seventeen peer-reviewed articles met the inclusion criteria. Most interventions were conducted at the individual level and were typically outreach testing initiatives. One study was conducted at a structural level. All studies were successful in encouraging HBV screening uptake, and 10 studies demonstrated effective linkage to care. Two studies showed evidence of monitoring participants post-intervention. Most interventions had more female than male participants. Interventions conducted across community and clinical-based settings had more participants engage in screening and/or linkage to care in community settings. Effective interventions to prevent HBV transmission and CHB-related morbidity and mortality were approaches that utilised linguistic-specific and culturally appropriate resources to successfully engage migrants. Community outreach programmes that educate participants about HBV transmission, screening, and treatment can promote community dialogue and understanding to reduce stigma and discrimination.

Knowledge, Attitude, and Practice towards Hepatitis B Infection Prevention and Screening among Indonesians

Hepatitis B has been one of the most prevalent infectious diseases in the world and specifically in Indonesia. Although the total conversion of hepatitis B virus (HBV) to chronic disease in Indonesia was reduced by 50%, the total number of hepatitis B cases increased by 2.5 times in 2021. Ineffective HBV immunization program in Indonesia prior to 1997 was addressed by the Ministry of Health through a more comprehensive HBV control, which, among others, involved Health Promotion to increase people’s knowledge and awareness towards hepatitis B infection prevention. In this regard, this study aims to identify the level of knowledge, attitude, and practice/behavior of the Indonesian population towards hepatitis B infection prevention and their willingness for screening, particularly in areas with high prevalence of hepatitis B. This study used a quantitative approach in looking at correlations between this set of knowledge, attitude, and practice, mainly by using Structural Equation Model (SEM) and SmartPLS 3.3.3 toolkit in SPSS. Through an analysis of online questionnaire results from over 400 respondents in four provinces (DKI Jakarta, West Java, DI Yogyakarta, and South Sulawesi), this study shows that respondents have a very high level of knowledge about hepatitis B; high level of positive attitude; and very high level of positive practice towards hepatitis B infection prevention. However, we also noticed some dissonances between the key aspects, namely that knowledge on hepatitis B correlates negatively with the behavior of the respondents and that the behavior also correlates negatively with their willingness for screening. In conclusion, we suggest that factors such as socio-economic context and prior informed knowledge on hepatitis B be considered to build a better strategy of Health Promotion and hepatitis B diagnostic screening among the population.

Seroprevalence of hepatitis B in previously undiagnosed patients: A community screening study

BACKGROUND: 40% of hepatitis B carriers have no knowledge of their diagnosis. A prior study in British Columbia suggested high rates of hepatitis B among immigrants. The authors undertook a large-scale screening study to validate these rates. METHODS: Attendees at Asian health fairs without knowledge of their hepatitis B status participated. They completed a questionnaire, and blood was drawn for HBV serologies. Active HBV was defined as HBV surface antigen positive. RESULTS: Of 2,726 patients, 1,704 (62.5%) were female and 1,022 (37.5%) male. Mean age was 62.7 ± 22.1 years, and mean time of residing in Canada was 27.5 ± 15.3 years. Most patients originated from China (1,042 patients, 38.2%) and Hong Kong (871, 31.2%). 56 patients tested positive (seroprevalence rate 2.05%, 95% CI 1.52%–2.59%). Most seropositive patients were from China (28 patients, 50.0%). Mean time of residence in Canada for seropositive patients (23.8 ± 2.1 years) was less than seronegative patients (27.6 ± 0.3 years) ( p = 0.06). There was a trend towards association of seropositivity with time of residence in Canada (OR 0.98, 95% CI 0.96–1.00, p = 0.09). 8 (14.3%) seropositive patients did not have family doctors, compared with 128 (4.8%) seronegative patients. Lack of a family doctor was strongly associated with seropositivity (OR 3.31, 95% CI 1.32–7.25, χ2 = 10.42, p = 0.001). INTERPRETATION: The authors have shown that high risk immigrant populations may have seroprevalence rates as high as 2,700 per 100,000. Lack of a family physician was associated with seropositivity. These results should be used to design improved outreach programs.

Differences in risk factors for hepatitis B, hepatitis C, and human immunodeficiency virus infection by ethnicity: A large population-based cohort study in British Columbia, Canada

OBJECTIVES

Addressing the needs of ethnic minorities will be key to finding undiagnosed individuals living with hepatitis B (HBV), hepatitis C (HCV), or human immunodeficiency virus (HIV). To inform screening initiatives in British Columbia (BC), Canada, the factors associated with HBV and/or HCV and/or HIV infection among different ethnic groups within a large population-based cohort were assessed.

METHODS

Persons diagnosed with HBV, HCV, or HIV in BC between 1990 and 2015 were grouped as East Asian, South Asian, Other Visible Minority (African, Central Asian, Latin American, Pacific Islander, West Asian, unknown ethnicity), and Not a Visible Minority, using a validated name-recognition software. Factors associated with infection within each ethnic group were assessed with multivariable multinomial logistic regression models.

RESULTS

Participants included 202 521 East Asians, 126 070 South Asians, 65 210 Other Visible Minorities, and 1 291 561 people who were Not a Visible Minority, 14.4%, 3.3%, 4.5%, and 6.3% of whom had HBV and/or HCV and/or HIV infections, respectively. Injection drug use was most prevalent among infection-positive people who were Not a Visible Minority (22.1%), and was strongly associated with HCV monoinfection, HBV/HCV coinfection, and HCV/HIV coinfection, but not with HBV monoinfection among visible ethnic minorities. Extreme material deprivation and social deprivation were more prevalent than injection drug use or problematic alcohol use among visible ethnic minorities.

CONCLUSIONS

Risk factor distributions varied among persons diagnosed with HBV and/or HCV and/or HIV of differing ethnic backgrounds, with lower substance use prevalence among visible minority populations. This highlights the need for tailored approaches to infection screening among different ethnic groups.

Effectiveness of Interventions for Hepatitis B and C: A Systematic Review of Vaccination, Screening, Health Promotion and Linkage to Care Within Higher Income Countries

Viral hepatitis is a significant global health concern, particularly within low-middle income countries. Diseases historically affecting low-middle income countries, such as viral hepatitis, have become increasingly prevalent within high-income countries due to globalisation and mass international migration. High prevalence of viral hepatitis in migrant populations is of particular concern due to the associated morbidity and mortality, as well as the increased risk of vertical and horizontal transmission in the community. This is compounded by the asymptomatic nature of hepatitis, meaning many of those affected are unaware of their infection status. Long-term effects of viral hepatitis can include liver cirrhosis, liver cancer and liver failure. Therefore, the health needs of vulnerable migrants within high-income countries due to issues associated with viral hepatitis require attention. This includes assessment of measures such as targeted health education, increased screening, linkage to appropriate treatment and follow-up care. Additionally, it is necessary to address migrant healthcare barriers, such as language, economic and social barriers. It is imperative that vulnerable migrant groups gain appropriate access to health services to prevent disease transmission and the widening of health-related disparities within high-income countries.

Interventions to reduce the burden of vaccine-preventable diseases among migrants and refugees worldwide: A scoping review of published literature, 2006-2018

BACKGROUND

Disparities in vaccine-preventable disease (VPD) burden and immunisation coverage between migrants and refugees and their host populations have been described in numerous countries worldwide. Effective strategies are required to reduce the health disparities and immunisation inequities experienced by migrants and refugees.

METHODS

Using Arksey and O'Malley's framework, we conducted a scoping review to identify available literature on interventions aimed at reducing VPD burden among migrants and refugees worldwide. We searched for relevant empirical, peer-reviewed literature published in English between 2006 and 2018 using MEDLINE, Ovid EMBASE, CINAHL, Sociological Abstracts, and Web of Science databases. Relevant information from the studies, including intervention type, details and outcomes, were charted in Microsoft Excel and results were summarised using a descriptive analytical method.

RESULTS

Seventy studies met the inclusion criteria. The number of published studies increased over the years. The majority of studies were conducted in high-income countries. More studies were conducted among migrants (not including refugees) (n = 48, 66%) than specifically among refugees (n = 25, 34%). Interventions were implemented in a variety of settings, including health care (n = 31, 42%), community (n = 29, 39%), off-shore (n = 7, 9%), national (n = 4, 5%), school (n = 2, 3%), and workplace (n = 1, 1%). Studies reported interventions focused at the individual (to facilitate uptake of health services) (n = 4, 5%), community (to raise awareness) (n = 25, 34%), provider (to offer health services) (n = 12, 16%) and/or system (to increase compliance with recommendations) (n = 33, 45%) level. To be effective, interventions were designed to overcome commonly identified barriers to accessing services related to language, culture, distance and cost. Engagement with community members and organisations was an effective way to co-design interventions that address migrants' specific needs.

CONCLUSIONS

Studies emphasised the importance of interventions that address the heterogeneity within and between migrant and refugee populations. Considerable variation in practice remains, therefore more evaluation of interventions is needed to inform policy and programme decision-making.