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

Co-designing an intervention to improve the childhood catch-up vaccination process for migrant parents in Australia

BACKGROUND

Catch-up vaccination is a personalised process through which children with missing recommended vaccinations or incomplete vaccination records are brought up to date with the Australian vaccination schedule. Navigating childhood catch-up vaccination can be difficult for migrant parents with inadequate health system knowledge and competing priorities during settlement. This study aimed to understand the experiences of migrant parents with childhood catch-up vaccination and co-design an intervention to improve the process.

METHODS

We recruited migrant parents who had attended the City of Melbourne Immunisation Service in Melbourne, Australia to participate in a qualitative co-design study between June and August 2022. Expression of interest emails were sent by the service, and we recruited eligible participants. In Phase One, we conducted group interviews with parents to understand their experiences and preferences for an intervention, these were analysed using inductive and framework analysis. In Phase Two, we designed prototype interventions based on parents' preferences and suggestions. In Phase Three, parents shared their feedback on each prototype.

RESULTS

Fourteen migrant parents participated in the study. Most parents did not discover the need for catch-up vaccination until childcare or kindergarten enrolment. The lack of information received about vaccination requirements and difficulty navigating the health system made the process challenging and time-consuming. Based on these Phase One themes, we designed a printout, mobile application, and website prototype. All three were well-received in Phase Three. Overall, parents' top three considerations for any intervention were 1) digital and online accessibility, 2) inclusion of step-by-step processes outlining catch-up vaccination; and 3) inclusion of a checklist.

CONCLUSIONS

Migrant parents lack information about childhood catch-up vaccination in Australia. A relatively simple intervention could help parents more easily navigate the process, thereby saving time and stress. The next steps are to seek funding to pilot such an intervention to assess practicality and usefulness.

Determinants of uptake of influenza, zoster and pneumococcal vaccines in patients with cardiovascular diseases

BACKGROUND

Globally, cardiovascular disease (CVD) is the leading cause of death and illness. Vaccine-preventable infections may increase acute coronary vascular disease events and the risk of complications. Low vaccine coverage has been reported among adults at high risk of complications from vaccine-preventable infections. There is a gap in research evidence around determinants of uptake of vaccines among adults with CVD. This study examined the uptake of influenza, pneumococcal and zoster vaccines and the determinants of uptake of the vaccines among cardiac patients.

METHOD

A prospective cross-sectional study was carried out among hospitalised cardiac patients through an interviewer-administered questionnaire. Descriptive statistics were used to investigate self-reported uptake of influenza, pneumococcal and zoster vaccines. Univariate and multivariate analyses of participants' social demographic and clinical characteristics were conducted to identify factors for receiving influenza vaccine.

RESULTS

Low vaccination rates among 104 participants were found for influenza (45.2%), pneumococcal (13.5%) and zoster (5.8%) vaccines. The most common reason for not receiving influenza vaccine was concern about side effects. Lack of awareness about the pneumococcal and zoster vaccines was the main reason for the poor uptake of these vaccines. Australia-born participants were more likely to receive influenza vaccine than overseas-born participants. Working-age participants and, interestingly, people living with a current smoker were less likely to receive influenza vaccine.

CONCLUSION

Influenza, pneumococcal and zoster vaccine uptake among cardiac patients was low. Encouraging physician recommendations for vaccination for cardiac patients under 65 years of age and addressing vaccination challenges among people from culturally and linguistically diverse backgrounds and pharmacy, workplace, and hospital vaccination may help increase vaccination uptake among cardiac patients.

The influence of health service interactions and local policies on vaccination decision-making in immigrant women: A multi-site Canadian qualitative study

OBJECTIVES

Research on immigrant and refugee vaccination uptake in Canada shows that immunization decisions vary by vaccine type, location, age and migration status. Despite their diversity, these studies often treat immigrant and refugee populations as a single group relative to other Canadians. In this comparative study, we explored how previous risk communication and immunization experiences influence immunization decisions by immigrant and refugee women from three communities across Canada.

METHODS

Participants included women from the Punjabi immigrant community located in Surrey and Abbotsford, British Columbia (n = 36), the Nigerian immigrant community located in Winnipeg, Manitoba (n = 43), and the Congolese refugee community in Edmonton, Alberta (n = 18). Using focus groups guided by focused ethnography methodology, we sought to understand immunization experiences in Canada and before arrival, and what information sources influenced the immunization decision-making process by the women in the three communities.

RESULTS

Participants had differing past experiences in Canada and before their arrival that influenced how they used information in their vaccination decisions. Clear vaccination communications and dialogue with Canadian health care providers increased trust in Canadian health care and the likelihood of vaccine uptake. By contrast, weak vaccine recommendations and antivaccination information in the community prompted participants to decline future vaccines.

CONCLUSION

Given our participants' different communication preferences and needs, we argue that a one-size-fits-all communication approach is inappropriate for immigrant and refugee populations. Instead, multi-pronged communication strategies are required to reach participants and respond to previous experiences and information that may lead to vaccination hesitancy.

Exploring Vaccination Challenges among Syrian Refugees in Jordan: Insights from Camps and Communities, and Perceived Parental Barriers to Childhood Vaccination Uptake

PURPOSE

To identify and understand the multifaceted barriers faced by Syrian refugees when seeking vaccination services for their children.

METHODS

A survey questionnaire was administered through structured interviews to a sample of Syrian refugees residing inside the Al-Zaatari camp and in various urban areas across Jordanian communities. This process utilized a multi-stage sampling approach, beginning with a random selection from clusters or strata, and then employing convenience sampling within each to select participants. The survey covered demographics, barriers to vaccination, and vaccine hesitancy.

RESULTS

A total of 332 participants completed the survey with a mean age of 32.7 ± 10 years ranging from 18 to 67. More than half of the sample (59%) had an education of 11th grade or less. Sociodemographic disparities regarding barrier perception were evident among participants. Middle-aged adults (older than 32), males, and those with a monthly income less than USD 200 had scored significantly higher on barrier perceptions across all categories (p < 0.05). In-camp residents were less likely to face vaccination barriers compared to those living outside the camps (p < 0.001). Psychological antecedents of vaccine assessments showed that younger individuals had significantly higher scores in complacency, calculation, and constraints (p < 0.05). Participants with lower income had lower constraints and calculation scores (p < 0.05). In-camp residents had significantly higher scores in complacency, constraints, and calculation constructs compared outside camps counterparts (p < 0.05). Participants with no formal education had higher scores in complacency and constraints, and those with less than a 12th-grade education and higher education degrees scored significantly higher on the collective responsibility construct (p < 0.05).

CONCLUSIONS

Efforts to promote vaccination among refugees should consider the specific challenges faced by this population, including financial barriers, healthcare access inequalities, and the impact of living arrangements. Public health strategies should address not only individual and psychological factors but also the physical and logistical challenges in obtaining vaccines.

Paediatric COVID-19 vaccination coverage and associated factors among migrant and non-migrant children aged 5-11 years in Aotearoa New Zealand: A population-level retrospective cohort study

OBJECTIVE

Children with migrant and refugee backgrounds may experience immunisation inequities due to barriers to accessing and accepting vaccines. In Aotearoa New Zealand (NZ), national reporting can mask inequities in coverage by migration background. This study explored paediatric COVID-19 vaccine uptake among children with migrant and refugee backgrounds.

METHODS

This population-level retrospective cohort study compared rates and determinants of paediatric COVID-19 vaccine uptake as of July 2022 amongst migrant and non-migrant children who were aged between 5 and 11 years as of January 2022. Linked de-identified administrative and health data available in Statistics NZ's Integrated Data Infrastructure were used, and univariate and multivariable logistic regression were conducted to determine associations.

RESULTS

Of the total study population (N = 451,323), 3.5% were overseas-born migrant children, 31.3% were NZ-born migrant children, and 65.3% were NZ-born non-migrant children. Only 50.8% (229,164 out of 451,323) of children had received at least one dose. Migrant children were significantly more likely to have received a COVID-19 vaccination than non-migrant children. Logistic modelling revealed that all factors, including ethnicity, gender, age, family type, household income, deprivation, region, parent COVID-19 vaccination status, and child's previous COVID-19 infection, significantly influenced COVID-19 vaccine uptake. The largest contributing factor was parents' COVID-19 vaccination status.

CONCLUSIONS

The findings suggest that NZ's paediatric COVID-19 vaccination programme was able to address logistical and motivational barriers commonly identified amongst migrants and refugees.

IMPLICATIONS FOR PUBLIC HEALTH

As parents' vaccination status is an important factor in vaccinating their own children, continuous efforts are needed to support confident parental COVID-19 vaccine decision-making. To address social inequities, engagement with marginalised communities to co-design tailored and localised approaches is recommended.

Parental perceptions, attitudes, and beliefs regarding vaccination of children aged 0-5 years: A qualitative study of hill-tribe communities, Thailand

The widespread availability and use of vaccines have tremendously reduced morbidity and deaths related to infectious diseases globally. However, in hill-tribe communities in Northern Thailand, vaccination rates remain low, and there is limited literature on parental perceptions, attitudes, and beliefs about vaccination for children under five years of age. We conducted a qualitative study employing semi-structured interviews to understand parents' perceptions, attitudes, and beliefs about vaccinations. A purposive sample was used to recruit participants. Data were analyzed using thematic analysis. 74 hill-tribe parents (14 Akha, 11 Hmong, 12 Lahu, 13 Lisu, 12 Karen, and 12 Yao) were interviewed. Four themes emerged from the interviews: 1) traditional beliefs, and practices 2) traumatic experiences, 3) lack of information and effective communication, and 4) trust and support from the community. Findings highlight that it is crucial to build trust by providing knowledge, appropriate information, and advice about vaccinations in order to improve vaccine coverage in children under five years of age in the hill-tribe context.

Childhood vaccination uptake among children born in Aotearoa New Zealand based on parental nationality

Migrants and refugees generally experience immunization inequities compared to their host populations. Childhood vaccination coverage rates are influenced by a complex set of interrelated factors, including child and parental nativity. Coverage rates for MMR, pertussis, and HPV vaccines were compared among children born in Aotearoa New Zealand (NZ) of overseas-born parents or NZ-born parents. A nationwide retrospective cohort study was conducted using linked, de-identified data. Logistic regression models examined the most influential factors contributing to differences in timely vaccine uptake. Of the total study population who had received all scheduled vaccines (N = 760,269), 32.9% were children of migrant parents. Children of migrant parents had higher rates of complete and timely uptake for MMR, pertussis, and HPV vaccinations compared to non-migrant children. NZ-born children of migrant parents were significantly more likely to receive MMR and pertussis-containing vaccines on-time compared to those of non-migrants. All included factors, except for the child's gender and parents' English ability, significantly influenced vaccine uptake. Among NZ-born children of migrant parents, additional logistic modeling found significant differences based on parental duration of residence, visa group, and region of nationality. Findings point to the importance of differentiating between parent versus child nativity when examining immunization coverage. While vaccination rates were higher for NZ-born children of migrant parents, compared to non-migrant parents, timely coverage rates across both groups were below national targets. Continued efforts are needed to improve timely immunization service delivery to address suboptimal and inequitable coverage.

"She vaccinated my baby and that's all…" Immunisation decision-making and experiences among refugee mothers resettled in Aotearoa New Zealand

BACKGROUND

To prevent disease outbreaks, refugee children must be age-appropriately immunised. This qualitative study gained an in-depth understanding of refugee mothers' vaccine decision-making and experiences accessing immunisation services for their children post-resettlement in Aotearoa New Zealand.

METHODS

An interpretive description methodology involving focus groups with refugee mothers (N = 45) was conducted in Auckland, one of the resettlement locations. Mothers were asked about their perceptions of vaccine-preventable diseases and vaccines, their experiences of attending immunisation events, and their suggestions for improvements to immunisation services. Data were analysed following the phases of reflexive thematic analysis.

RESULTS

Four themes were constructed. Do I have a choice? Mothers displayed pro-vaccination sentiments and parental obligation to vaccinate their children to protect their health, which underpinned their compliance with the national vaccine schedule. Transnational vaccine perceptions and behaviours It was evident that comparing their health experiences in their origin countries reinforced their positive perceptions of and trust in vaccines, health providers and their recommendations, the health system and government in New Zealand. Information sharing with their transnational networks had the potential to influence vaccine perceptions and behaviours in home and host countries. Unanswered questions and concerns Mothers discussed how many of their questions and concerns about immunisations and post-vaccine management went unanswered. Relationships and experiences matter Mothers stressed the importance of who vaccinated their child and how it was administered, highlighting that health providers' demeanour and competence influence their immunisation experiences.

CONCLUSIONS

Health providers are encouraged to focus on creating a positive immunisation experience for refugee background families. Qualified interpreters and provision of culturally and linguistically appropriate information are required. Transnationalism at the individual level appears to influence vaccine perceptions and behaviours among refugee-background mothers. Future research focusing on caregivers with child(ren) who are not fully vaccinated would be beneficial.

Does the Integration of Migrants in the Host Society Raise COVID-19 Vaccine Acceptance? Evidence From a Nationwide Survey in Japan

Research indicates that integration contributes to maintaining health among migrants, yet little is known about the association between integration and vaccination acceptance. This study aimed to explore COVID-19 vaccine intention and acceptance, and the association between integration and vaccine hesitancy among migrants in Japan. We conducted an internet survey among migrants in Japan from October 5 to October 14, 2021. Among 1,455 participants, 11.6% reported hesitancy toward COVID-19 vaccination. We found that the overall integration and social integration were associated with the vaccination intention. Some commonly identified barriers (e.g., financial difficulties, language) were not related to COVID-19 vaccination acceptance among migrants in Japan. Highly integrated migrants were less likely to report vaccine hesitancy against COVID-19. To promote COVID-19 acceptance among migrants, customized intervention policies should focus on the migrants with a lower level of integration, especially those with little social connection with the locals.

MMR vaccine coverage and associated factors among overseas-born refugee children resettled in Aotearoa New Zealand: a national retrospective cohort study

Background

Refugee children may be under-immunised against common vaccine-preventable diseases due to a myriad of factors related to their migration journey.

Methods

This retrospective cohort study explored the rates and determinants of enrolment on the National Immunisation Register (NIR) and measles, mumps and rubella (MMR) coverage among refugee children up to 18 years old who resettled in Aotearoa New Zealand (NZ) from 2006 to 2013. Univariate and multivariable logistic regression were conducted to determine associations.

Findings

Of the cohort (N = 2796), two thirds of the children (69%) were enrolled on the NIR. Among this sub-cohort (n = 1926), less than one third (30%) were age-appropriately vaccinated with MMR. MMR coverage was highest among younger children and improved over time. Logistic modelling revealed that visa category, year of arrival, and age group were significant factors that influenced NIR enrolment and MMR vaccine uptake. Those arriving via asylum seeking, family reunification and humanitarian pathways were less likely to be enrolled and vaccinated compared to refugees who entered under the national quota programme. More recent arrivals and younger children were more likely to be enrolled and vaccinated compared to children who arrived in NZ longer ago and were older.

Interpretation

Resettled refugee children have suboptimal NIR enrolment and MMR coverage rates which varied significantly by visa category, highlighting the need for immunisation services to better engage with all refugee families. These findings suggest that broad structural factors related to policy and immunisation service delivery may influence the differentials seen.

Funding

Health Research Council of New Zealand (18/586).

The forgotten people: Hepatitis B virus (HBV) infection as a priority for the inclusion health agenda

Hepatitis B virus (HBV) infection represents a significant global health threat, accounting for 300 million chronic infections and up to 1 million deaths each year. HBV disproportionately affects people who are under-served by health systems due to social exclusion, and can further amplify inequities through its impact on physical and mental health, relationship with stigma and discrimination, and economic costs. The 'inclusion health' agenda focuses on excluded and vulnerable populations, who often experience barriers to accessing healthcare, and are under-represented by research, resources, interventions, advocacy, and policy. In this article, we assimilate evidence to establish HBV on the inclusion health agenda, and consider how this view can inform provision of better approaches to diagnosis, treatment, and prevention. We suggest approaches to redress the unmet need for HBV interventions among excluded populations as an imperative to progress the global goal for the elimination of viral hepatitis as a public health threat.

Uptake of influenza, pneumococcal and herpes zoster vaccines among people with heart failure and atrial fibrillation

BACKGROUND

Cardiovascular diseases are the major cause of hospitalisation and death globally. Infections exacerbate cardiovascular events among cardiac patients, contributing to all-cause mortality. Vaccination is a cheap and effective intervention that can prevent infection. In Australia, influenza, pneumococcal and herpes zoster vaccines are recommended and funded for high-risk adults such as cardiac patients. There is high prevalence of high-risk adults in Western Sydney.

OBJECTIVES

This study investigates the uptake of influenza, pneumococcal and herpes zoster vaccines in patients admitted with heart failure and atrial fibrillation in a tertiary hospital in Western Sydney and factors associated with the uptake of the vaccines.

METHODS

Consecutive patients' hospitalised between 2014 and 2018 with heart failure or atrial fibrillation as principal diagnoses were identified. Information on patients' social demographic, clinical and vaccination status was collected and described using descriptive analysis. Univariate and multivariate analyses were conducted to determine factors associated with the uptake of the vaccines.

RESULTS

Low uptake for pneumococcal (40-45 %) and herpes zoster (15 %) vaccines were found. Prevalence of influenza vaccination was lower among participants younger than 65 (51-72 %) than in older ones (78-96 %). Australia-born participants were more likely to receive pneumococcal vaccine than those born overseas (OR 2.02, 95 % CI 1.05-3.89). Participants 65 years or older and those with comorbidities such as hypertension, COPD and chronic renal impairment were more likely to receive the vaccines.

CONCLUSION

Multidisciplinary strategies are needed to improve access to vaccination, community knowledge, community engagement, and healthcare provider support to provide appropriate care to migrants and younger cardiac patients and reduce morbidity and mortality in this high-risk group.

COVID-19 vaccine hesitancy among non-refugees and refugees in Kenya

Factors associated with COVID-19 vaccine hesitancy (which we define as refusal to be vaccinated when asked, resulting in delayed or non- vaccination) are poorly studied in sub-Saharan Africa and among refugees, particularly in Kenya. Using survey data from wave five (March to June 2021) of the Kenya Rapid Response Phone Survey (RRPS), a household survey representative of the population of Kenya, we estimated the self-reported rates and factors associated with vaccine hesitancy among non-refugees and refugees in Kenya. Non-refugee households were recruited through sampling of the 2015/16 Kenya Household Budget Survey and random digit dialing. Refugee households were recruited through random sampling of registered refugees. Binary response questions on misinformation and information were transformed into a scale. We performed a weighted (to be representative of the overall population of Kenya) multivariable logistic regression including interactions for refugee status, with the main outcome being if the respondent self-reported that they would not take the COVID-19 vaccine if available at no cost. We calculated the marginal effects of the various factors in the model. The weighted univariate analysis estimated that 18.0% of non-refugees and 7.0% of refugees surveyed in Kenya would not take the COVID-19 vaccine if offered at no cost. Adjusted, refugee status was associated with a -13.1[95%CI:-17.5,-8.7] percentage point difference (ppd) in vaccine hesitancy. For the both refugees and non-refugees, having education beyond the primary level, having symptoms of COVID-19, avoiding handshakes, and washing hands more often were also associated with a reduction in vaccine hesitancy. Also for both, having used the internet in the past three months was associated with a 8.1[1.4,14.7] ppd increase in vaccine hesitancy; and disagreeing that the government could be trusted in responding to COVID-19 was associated with a 25.9[14.2,37.5]ppd increase in vaccine hesitancy. There were significant interactions between refugee status and some variables (geography, food security, trust in the Kenyan government's response to COVID-19, knowing somebody with COVID-19, internet use, and TV ownership). These relationships between refugee status and certain variables suggest that programming between refugees and non-refugees be differentiated and specific to the contextual needs of each group.

Human Papillomavirus Vaccination and Pap Smear Rates Among Burmese Refugee Girls in a Healthcare System in Omaha, Nebraska

While human papilloma virus (HPV) vaccinations and Pap smear screenings are known to improve the survival rates and incidence of cervical cancer, refugee populations have traditionally been disadvantaged within this arena. Due to past and recent political issues in Myanmar, Burmese refugee women in Nebraska may be at particular risk due to their increasing numbers. This study examined 65 female Burmese refugees who were candidates for HPV vaccinations and 106 female Burmese refugees who could have received Pap smear screenings between 2010 and 2020. Of the 65 patients aged 11-26, 49.2% initiated the HPV vaccine series and 30.8% completed the series. In patients aged 13-17, 86.4% initiated the vaccine series and 54.6% completed the series. Of the 106 patients over 18 years of age, 32.1% had a Pap smear within the last 3 years. The need to improve HPV vaccine and Pap smear rates in refugee populations is clear. While focusing on the designated refugee exam may have improved HPV vaccine rates, it is important to examine gaps in knowledge with regards to attitudes surrounding HPV vaccines and Pap smears within the Burmese refugee population.

A Select Bibliography of Actions to Promote Vaccine Literacy: A Resource for Health Communication

In this bibliography, the researchers provide an introduction to the available evidence base of actions to promote vaccine literacy. The research team organized interventions to create a tool that can inform health communicators and practitioners seeking a resource focused on strategy and implementation design for actions that support vaccine literacy. This scoping bibliography is honed specifically to respond to the urgency of the current pandemic, when supporting and increasing vaccine literacy offers promise for achieving the critically needed high levels of vaccination. Over the course of the coming months and year, this bibliography will be a dynamic and "living" document hosted and maintained on vaccineliteracy.com.