Interventions on health care providers to improve seasonal influenza vaccination rates among patients: a systematic review and meta-analysis of the evidence since 2000

Strategies to increase influenza vaccination coverage in the Italian pediatric population: a literature review and expert opinion

INTRODUCTION

Vaccination rates in Italian children must be substantially increased to control the transmission of seasonal influenza and mitigate the associated socio-economic burden. This work aimed to describe strategies to improve the effectiveness and reach of pediatric influenza vaccination campaigns in Italy.

AREAS COVERED

Based on a literature review, influencing factors and potential strategies to enhance vaccination coverage were explored, focusing on settings, logistics, and communication aspects.

EXPERT OPINION

School-based interventions should be deeply implemented in Italy by offering a cost-effective and safe approach to vaccination and successfully overcoming socio-economic and cultural challenges. Scheduled educational programs and institution-supported childhood influenza vaccination awareness campaigns that thoroughly inform about the risk of influenza and its socio-economic consequences, counter vaccine hesitancy, and discuss the benefits of vaccination are desirable, thus concretely prompting all children, families, and healthcare professionals to get vaccinated. Digitalizing procedures could lead to improved adherence by healthcare professionals to immunization programs. Nationwide implementation of these strategies would establish a robust, sustainable system for pediatric influenza vaccination. This would significantly increase childhood vaccination rates, leading to improved disease control and substantially reducing the overall national burden of influenza.

Enhanced influenza vaccination for older adults in Europe: a review of the current situation and expert recommendations for the future

INTRODUCTION

Influenza causes considerable morbidity and mortality in Europe, particularly among older adults due to comorbidities, as well as immunosenescence and inflammaging, which contribute to a diminished immune response. Vaccination remains the most effective way to prevent poor outcomes; however, uptake is suboptimal and many countries recommend standard vaccines despite evidence supporting better protection with enhanced (adjuvanted and high-dose) vaccines.

AREAS COVERED

A multidisciplinary group of experts reviewed the burden of influenza in Europe and evaluated data on enhanced vaccines, providing recommendations for their use in older adults. The group discussed barriers to vaccination and strategies to increase uptake.

EXPERT OPINION

Improving protection of older adults against influenza relies upon increasing vaccine uptake and ensuring access to vaccines that overcome age-related immunological decline. Achieving higher uptake requires national policies that facilitate equitable access and clear communication about vaccine eligibility. Based on available evidence, enhanced vaccines offer better protection than standard vaccines against hospitalization and complications in older adults. National recommendations should prioritize the use of enhanced influenza vaccines over standard vaccines in older adults. Limitations to interpretation of evidence include discrepancies in reporting of influenza-related medical encounters and underreporting of influenza-related complications.

Better Together? A Mediation Analysis of French General Practitioners' Performance in Multi Professional Group Practice

Background

Integrated primary care teams remain a debatable policy in family medicine that could be a convenient response to French shortages in medical density.

Objectives

To analyse how general practitioners (GPs) respond to insufficient GP supply in their practice area in terms of quantity and quality of care, and how this response is mediated by enrolment in integrated primary care teams - multi-professional group practices (MGPs).

Methods

We used structural equation modelling on 3 representative cross-sectional surveys (2019-2020) of 1209 French GPs. Quantity and quality of care were approximated by latent variables comprising respectively GPs' demand absorption capacity and frequencies of vaccine recommendations.

Results

In the absence of potential mediators, low GP density was negatively associated with quantity (-0.221, unstandardized direct effects), but not with the quality of care. In the presence of mediators, low GP density was associated with higher work-related stress (0.120), which was consecutively associated with deteriorated demand absorption capacity (-0.202). Higher use of e-health tools was associated with greater involvement in vaccine recommendations (0.357). GPs in MGPs tended to use more e-health tools than those practicing outside MGPs (0.032), with a favourable effect on vaccine recommendations.

Conclusion

Lower level of work-related stress is the key mediator in handling patients' requests. When correcting for self-selection into MGPs, we found no significant mediation effect of enrolment in MGPs on the quantity of care but rather an effect on the quality of care. Our results pinpoint an added value of an enrolment in an MGPs to care quality that advocates for its further development.

JEL Classification

I14, I18.

A systematic review and meta-analysis of strategies to promote vaccination uptake

Although immunization can dramatically curb the mortality and morbidity associated with vaccine-preventable diseases, vaccination uptake remains suboptimal in many areas of the world. Here, in this meta-analysis, we analysed the results from 88 eligible randomized controlled trials testing interventions to increase vaccination uptake with 1,628,768 participants from 17 countries with variable development levels (for example, Human Development Index ranging from 0.485 to 0.955). We estimated the efficacy of seven intervention strategies including increasing access to vaccination, sending vaccination reminders, providing incentives, supplying information, correcting misinformation, promoting both active and passive motivation and teaching behavioural skills. We showed that the odds of vaccination were 1.5 (95% confidence interval, 1.27 to 1.77) times higher for intervention than control conditions. Among the intervention strategies, using incentives and increasing access were most promising in improving vaccination uptake, with the access strategy being particularly effective in countries with lower incomes and less access to healthcare.

Characteristics and determinants of seasonal influenza vaccination in Manitoba, Canada: A population-wide record-linkage study

Background

Seasonal influenza vaccine (SIV) uptake (receipt of vaccine) in Manitoba, Canada is consistently low notwithstanding vaccine availability and free-of-charge vaccination. Despite, there is a lack of published evidence on the determinants of uptake of the vaccine. We sought to assess the association between SIV uptake and certain population and primary care physician (PCP) characteristics in Manitoba.

Methods

We conducted a longitudinal study utilizing Manitoba administrative health databases. We summarized SIV uptake from 2000/01-2019/20 influenza seasons across subpopulations defined by socioeconomic, health-related and PCP characteristics. Utilizing multivariable generalized estimating equation logistic regression models, we assessed the association between SIV uptake and the socioeconomic, health-related and PCP characteristics, stratified by age group (<5-, 5-17-, 18-44-, 45-64-, ≥65-year-olds) and sex. Results are adjusted odds ratios with associated 95 % confidence intervals.

Results

SIV uptake percentage increased over time with 4.4 %, 13.1 %, 17.5 % and 21.7 % of < 5-year-olds, 2 %, 4.9 %, 9.7 % and 13.1 % of 5-17-year-olds, 5.4 %, 8.8 %, 10.7 % and 13.5 % of 18-44-year-olds, 16.8 %, 21.3 %, 23.6 % and 24.6 % of 45-64-year-olds receiving the SIV in 2000-2004, 2005-2009, 2010-2014 and 2015-2019, respectively. There was a decline among ≥ 65-year-olds from 58.5 % to 53.5 %. We observed a similar pattern across subpopulations. There were significantly increased odds of SIV uptake among females within the age groups ≥ 18 years, in higher income quintiles, mostly with increased contact with a PCP/hospitalization within age groups ≥ 18 years, among those who had older or female PCPs (the opposite observation among ≥ 65-year-olds) and whose PCP administered at least one SIV in prior influenza season. These observations were largely consistent irrespective of sex.

Conclusion

SIV uptake in Manitoba appears to increase with age, and many socioeconomic, health-related and PCP characteristics appear to be associated with it. These findings may inform targeted vaccination programs to optimize influenza vaccination in Manitoba and similar Canadian jurisdictions.

Countering vaccine hesitancy: a systematic review of interventions to strengthen healthcare professionals' action

BACKGROUND

Vaccine hesitancy is relevant for healthcare professionals (HCPs) who face challenges in building trusting relationships with patients. Accordingly, the VAX-TRUST project has been developed to improve experiences of HCPs and patients dealing with vaccinations. To support VAX-TRUST, this work aimed to identify latest interventions targeted at HCPs to address hesitancy and increase vaccine uptake.

METHODS

A systematic review was conducted according to PRISMA by searching PubMed, Scopus and Embase. The protocol was registered on PROSPERO. Articles were eligible if evaluated interventions directly targeted at HCPs/healthcare students. The search was run on 26 January 2022. Articles published in 2016 or after were included.

RESULTS

A total of 17 492 records were identified; 139 articles were selected. Most articles were set in USA (n = 110). Over half had a pre-post design without a control group (n = 78). A total of 41 articles focused on single-component interventions, 60 on multi-component interventions involving only HCPs and/or students and 38 on multi-component interventions involving also other professionals. Main components were in-person education (n = 76), synchronous (n = 10) and asynchronous (n = 23) online learning, educational materials (n = 26), performance assessment and feedback (n = 33), electronic record changes (n = 30), role play/simulation (n = 21) and online games/apps (n = 5). Educational sessions were mainly about scientific update or communication. Outcomes of interventions were grouped in: vaccination rates (n = 69), knowledge (n = 32), attitudes (n = 26), confidence in counselling (n = 30) and acceptability (n = 16).

CONCLUSIONS

Apps, gaming, role play/simulations could represent innovative interventions. This review highlighted the need of delving into communication strategies and using more robust evaluations, longer follow-up and standardized measurements.

Social and demographic patterns of influenza vaccination coverage in Norway, influenza seasons 2014/15 to 2020/21

AIMS

To examine influenza vaccination coverage among risk groups (RG) and health care workers (HCW), and study social and demographic patterns of vaccination coverage over time.

METHODS

Vaccination coverage was estimated by self-report in a nationally representative telephone survey among 14919 individuals aged 18-79 years over seven influenza seasons from 2014/15 to 2020/21. We explored whether belonging to an influenza RG (being >=65 years of age and/or having >=1 medical risk factor), being a HCW or educational attainment was associated with vaccination status using logistic regression.

RESULTS

Vaccination coverage increased from 27 % to 66 % among individuals 65-79 years, from 13 % to 33 % among individuals 18-64 years with >=1 risk factor, and from 9 % to 51 % among HCWs during the study period. Being older, having a risk factor or being a HCW were significantly associated with higher coverage in all multivariable logistic regression analyses. Higher education was also consistently associated with higher coverage, but the difference did not reach significance in all influenza seasons. Educational attainment was not significantly associated with coverage while coverage was at its lowest (2014/15-2017/18), but as coverage increased, so did the differences. Individuals with intermediate or lower education were less likely to report vaccination than those with higher education in season 2018/19, OR = 0.61 (95 % CI 0.46-0.80) and OR = 0.58 (95 % CI 0.41-0.83), respectively, and in season 2019/20, OR = 0.69 (95 % CI 0.55-0.88) and OR = 0.71 (95 % CI 0.53-0.95), respectively. When the vaccine was funded in the COVID-19 pandemic winter of 2020/21, educational differences diminished again and were no longer significant.

CONCLUSIONS

We observed widening educational differences in influenza vaccination coverage as coverage increased from 2014/15 to 2019/20. When influenza vaccination was funded in 2020/21, differences in coverage by educational attainment diminished. These findings indicate that economic barriers influence influenza vaccination decisions among risk groups in Norway.

What impact does the attitude toward COVID-19 vaccination have on physicians as vaccine providers? A cross sectional study from the German outpatient sector

BACKGROUND

COVID-19 vaccination is recognized as a key component in addressing the COVID-19 pandemic. Physicians' attitudes toward vaccination are known to play a defining role in the management and dissemination of medical advice to patients. In Germany, outpatient practitioners are predominantly responsible for the dissemination of vaccines.

METHOD

Using a cross-sectional online survey, 932 outpatient general practitioners, gynecologists, and pediatricians in Germany were asked in fall, 2021, about their attitude toward COVID-19 vaccination and - among others - their communication in vaccine discussions, their assessment of vaccine safety, and reporting of suspected adverse events. Physicians were divided into two groups along their attitudes toward COVID-19 vaccination. In addition, multivariate linear regression models were constructed to assess differences in communication strategies.

RESULTS

92 % of physicians had a positive or very positive attitude toward COVID-19 vaccination. Own vaccination status, practice-based vaccination delivery, and estimated vaccination coverage among patients were significantly associated with the attitude toward vaccination. Confidence in vaccine safety was significantly lower among physicians with negative attitudes. There were no differences between the two groups in self-assessment of the ability to detect suspected adverse events, but there were differences in the observing and reporting of adverse events. For the linear regression models, we found that a more negative attitude toward COVID-19 vaccination was significantly associated with increased acceptance of patient refusal of COVID-19 vaccination and empathic behavior for patient concerns. In contrast, willingness to engage in a detailed persuasion consultation was significantly lower. Pediatricians showed significantly higher empathy for patient-side concerns compared to general practitioners, whereas gynecologists showed less empathy than general practitioners.

DISCUSSION

The physician's attitude toward COVID-19 vaccination influences the physician's practices as a vaccine provider. However, when providing medical advice and healthcare, the physician should focus on the actual needs of the patient.

Enjeux actuels et pistes de solution pour améliorer les couvertures vaccinales antigrippales dans les milieux ruraux

INTRODUCTION

Despite the positive impact of vaccination on health, influenza vaccination rates worldwide remain low for certain population groups. In Quebec, vaccination rates among populations with chronic diseases remain below what is expected by public health. Since this situation is also noticeable in rural areas, it is necessary to reflect on the current issues associated with low vaccination rates in the rural population.

PURPOSE OF RESEARCH

The purpose of this commentary is to explore the importance of obtaining a multifactorial understanding of the problem raised in order to propose possible solutions to increase influenza vaccination rates among people living in rural areas.

A rapid global review of strategies to improve influenza vaccination uptake in Australia

This study aimed to identify effective strategies for improving the uptake of influenza vaccination and to inform recommendations for influenza vaccination programs in Australia. A rapid systematic review was conducted to assimilate and synthesize peer-reviewed articles identified in PubMed. The National Health and Medical Research Council (NHMRC) Hierarchy of Evidence was used to appraise the quality of evidence. A systematic search identified 4373 articles and 52 that met the inclusion criteria were included. The evidence suggests influenza vaccination uptake may be improved by interventions that (1) increase community/patient demand and access to influenza vaccine and overcome practice-related barriers; (2) reinforce the critical role healthcare providers play in driving influenza vaccination uptake. Strategies such as standing orders, reminder and recall efforts were successful in improving influenza vaccination rates. Community pharmacies, particularly in regional/remote areas, are well positioned to improve influenza vaccine coverage. The findings of this rapid review can be utilized to improve the performance of influenza immunization programs in Australia and other countries with comparable programs; and recommend priorities for future evaluation of interventions to improve influenza vaccination uptake.

Impact of a peer comparison intervention on seasonal influenza vaccine uptake in community pharmacy: A national cluster randomized study

BACKGROUND

Seasonal influenza vaccine (SIV) uptake in the United States remains suboptimal, requiring new and innovative strategies.

OBJECTIVE

To evaluate the impact of a behavioral peer comparison (PC) intervention on SIV uptake in community pharmacies across the United States.

METHODS

A cluster randomized study was conducted across a national network of Walmart community pharmacies (> 4500 sites) during the 2019-2020 influenza season. The clusters consisted of 416 markets, each containing an average of 11 pharmacies. All pharmacies in a market were randomly assigned to either no intervention or the PC intervention, a software-delivered communication informing on-site staff, including pharmacists and pharmacy technicians, of their pharmacy's weekly performance, measured as SIV doses administered, compared with that of peer pharmacies within their market. The outcome was the pharmacy-level cumulative SIV doses administered during the intervention period (September 1, 2019,-February 29, 2020). Linear regression models were used to estimate the PC impact, with multiway cluster-robust SEs estimated by market and state.

RESULTS

A total of 4589 pharmacies were enrolled in the study, with 2297 (50.1%) randomized to the control group and 2292 (49.9%) randomized to the PC intervention group. Overall, compared with the control pharmacies, the PC pharmacies administered 3.7% (95% CI -0.3% to 7.9%) additional SIV doses. Among large-format pharmacies, the PC pharmacies administered 4.1% (95% CI 0.1%-8.3%) additional SIV doses compared with the controls. Historically low-performing large-format PC pharmacies administered 6.1% (95% CI 0.5%-11.9%) additional SIV doses compared with the controls. No statistically significant treatment effects were observed among small-format pharmacies.

CONCLUSION

Our findings demonstrate that PCs can improve SIV uptake among large-format community pharmacies, with historically low-performing pharmacies potentially exhibiting the greatest relative impact. Wide-scale implementation of PCs in community pharmacies may help to further improve SIV uptake in these settings.