Health care provider trust in vaccination: a systematic review and qualitative meta-synthesis

Assessing vaccine coverage and delivery strategies for influenza and COVID-19 among Italian healthcare workers: A 2015-2023 case study

Healthcare workers (HCWs) are essential in preventing and managing infectious diseases. Despite their critical role, vaccination coverage among HCWs remains suboptimal, endangering not only patient safety and healthcare system efficiency, but also HCWs' own health due to their frequent exposure to infectious agents. This study examines a decade of influenza vaccination trends and recent COVID-19 vaccine co-administration patterns at a major Italian hospital, aiming to identify factors affecting vaccine acceptance and evaluate organizational strategies to enhance vaccination uptake. A retrospective cohort study analyzed vaccination data from 6,341 hCWs between 2015 and 2023, examining acceptance rates across different vaccination delivery models. Mixed effects logistic regression models evaluated the impact of sociodemographic and professional factors and organizational approaches on vaccine acceptance. Results showed influenza vaccination peaked at 46% during the first COVID-19 year, before declining to pre-pandemic levels. Co-administration rates increased significantly, with a 118.94% rise between 2021 and 2022. Different delivery models significantly influenced vaccine acceptance: "open-day" events significantly boosted influenza vaccine acceptance (OR 22.29, 95% CI [18.22; 27.27]), while the hospital outpatient service proved optimal for co-administration (OR 61.03, 95% CI [30.97; 120.25]). This study reveals important patterns in vaccination behavior and organizational effectiveness. The observed decline in influenza vaccination after the COVID-19 peak suggests vaccine fatigue and reduced risk perception due to widespread preventive measures. The success of different delivery models indicates that healthcare institutions should implement multiple, complementary vaccination strategies tailored to specific contexts and workforce preferences, while maintaining continuous educational support to ensure sustained vaccine coverage.

Strategies used to improve vaccine uptake among healthcare providers: A systematic review

Background

Vaccination is one of the most effective available public health tools, preventing infectious diseases to safeguard public health and save millions of lives annually. However, in recent years vaccine hesitancy has increased among all populations, including healthcare workers. Healthcare providers are central to vaccination efforts due to their increased exposure to disease and vulnerable patients, and their role in patient confidence and decision-making. These decreasing uptake rates highlight a critical need to address specific barriers within this target group. This systematic review aims to explore the strategies used to improve vaccine uptake among healthcare providers.

Methods

A literature search was conducted in PubMed, EMBASE, and MEDLINE databases, alongside a grey literature search, to identify studies describing interventions to improve vaccine uptake among healthcare providers. This was followed by de-duplication and double-blinded screening processes using Rayyan. Data extraction and thematic analysis focused on categorising interventions and identifying frequencies of use, to develop recommendations for further interventions tailored to target regions.

Results

60 studies were identified, predominantly concerning influenza vaccination. Interventions included educational initiatives, reminders, incentives, access solutions, feedback, and policy implementation. Key strategies included targeted educational lectures, posters, and pamphlets; mobile vaccination units; extended vaccination hours; and leadership engagement. The findings underscore the importance of a multifaceted approach combining educational efforts, enhanced accessibility, and motivational incentives to improve vaccination rates within the healthcare providers, especially where mandatory vaccination is controversial.

Conclusions

This review evaluates tailored strategies to enhance vaccine confidence and uptake among healthcare providers, advocating for a holistic approach that includes educational initiatives, reminder systems, incentives, improved access, feedback mechanisms, and policy enactment to effectively address hesitancy and promote public health.

Understanding the factors that shape vaccination ecosystem resilience: a qualitative assessment of international expert experiences and perspectives

Introduction

'Shocks' or external stressors to vaccination programmes can lead to decreased vaccination coverage rates. The capacity of vaccination ecosystems to effectively respond and adapt to shocks demonstrates programme resilience. This study sought to describe components that contribute to resilience in national immunisation programmes.

Methods

Mixed-methods study comprising in-depth interviews and surveys with n=30 vaccination programme experts in eight countries (Brazil, Costa Rica, Greece, Japan, Nigeria, Philippines, Spain and the USA). We elicited data on country-specific shocks, associated effects and factors that facilitated or impeded programme resilience. Interviews and open-ended survey responses were analysed qualitatively, with closed-ended survey questions analysed using descriptive statistics.

Results

Experts described immediate effects of shocks including decreased vaccine uptake and negative perceptions of vaccination from the public and media. Late emerging impacts included increased vaccine hesitancy and vaccine-preventable disease (VPD) rates. Stakeholder education, immunisation information systems (IIS) and programme financing were key factors to strengthening programme resilience. Appropriately trained frontline healthcare personnel can counter vaccine misinformation that otherwise erodes trust and contributes to hesitancy. The COVID-19 pandemic also exposed structural weaknesses in programme resilience, with experts highlighting the need for robust IIS and workforce support to mitigate burnout and strengthen resilience when a shock occurs.

Conclusions

Our findings provide preliminary insights into factors that experts believe to be associated with vaccination programme resilience. Anticipating, adapting and responding to shocks is central to strengthening systems, ensuring ecosystem resilience and protecting against current and future VPD threats.

Can hospitalists improve COVID-19 vaccination rates?

Three years after the start of the SARS-CoV-2 virus (COVID-19) pandemic, its effects continue to affect society and COVID-19 vaccination campaigns continue to be a topic of controversy and inconsistent practice. After experiencing spikes in COVID-19 cases, our University of California Davis Health Division of Hospital Medicine sought to understand the reasons underlying the low COVID-19 vaccination rates in our county and find approaches to improve the number of vaccinations among adults admitted to the inpatient setting. This quality improvement project aimed to increase COVID-19 primary and booster vaccine efforts through a multi-pronged approach of increased collaboration with specialised staff and optimisation of use of our electronic health record system.Our key interventions focused on developing a visual reminder of COVID-19 vaccine status using the functionality of our electronic medical record (EMR), standardising documentation of COVID-19 vaccine status and enhancing team-based vaccination discussions through team huddles and partnering with inpatient care coordinators. While our grassroots approach enhanced COVID-19 vaccination rates in the inpatient setting and had additional benefits such as increased collaboration among teams, system-level efforts often made a greater impact at our healthcare centre. For other institutions interested in increasing COVID-19 vaccination rates, our top three recommendations include integrating vaccination into pre-existing workflows, optimising EMR functionality and increasing vaccine accessibility in the inpatient setting.

Attitudes toward influenza vaccination in healthcare workers in Italy: A systematic review and meta-analysis

Healthcare workers (HCWs) are among the at-risk groups for whom influenza vaccination is strongly recommended. To assess the proportion of Italian HCWs with positive attitudes toward influenza vaccination, we conducted a systematic review of relevant literature and a meta-analysis. Our focus was on the influenza seasons from 2017/18 to 2021/22. The prevalence of favorable attitudes toward vaccination varied, ranging from 12% during the 2017/18 influenza season to 59% in the 2020/21 season. The significant increase in the 2020/21 season can be attributed to adaptations necessitated by the COVID-19 pandemic. During the 2021/22 influenza season, there was a decline in vaccination coverage (37%), likely due to the absence of a robust preventive culture. Various strategies have been employed to enhance HCWs' attitudes to achieve higher vaccination rates, but none of them have demonstrated satisfactory results. Policymakers should consider implementing a policy of mandatory vaccination to ensure elevated vaccination coverage among HCWs.

COVID-19 Vaccination Intent, Barriers and Facilitators in Healthcare Workers: Insights from a Cross-Sectional Study on 2500 Employees at LMU University Hospital in Munich, Germany

Considering the role of healthcare workers (HCW) in promoting vaccine uptake and previously recorded hesitancy among HCW, we aim to examine the COVID-19 vaccination intent and status of HCW through a cross-sectional anonymous online survey at LMU University Hospital in Munich. Data collection was informed by the Health Belief Model (HBM) and focused on vaccination intent, status and on potential factors affecting the decision-making process. In total, 2555 employees completed the questionnaire. Our data showed that an approving attitude towards recommended vaccines and having received an influenza vaccine in the previous winter were strongly associated with COVID-19 vaccination intent. Further, a positive COVID-19 vaccination status was associated with a higher likelihood of approving the extension of the validity of non-pharmaceutical interventions at the workplace. Our HBM-analysis demonstrated strong associations between the perceived benefits and barriers and COVID-19 vaccination intent. Unchanged or low perceived susceptibility and severity were associated with refusal or indecisiveness. Our findings highlight the factors associated with the decision regarding a COVID-19 vaccine and indicate a pattern-like behavior in the acceptance of novel vaccines by HCW. These insights can help inform the communication aims of vaccination campaigns among HCW within similar organizational contexts or in future outbreaks.

COVID-19 Vaccination Hesitancy among Healthcare Workers-A Review

The COVID-19 pandemic and its associated vaccine have highlighted vaccine hesitancy among healthcare workers (HCWs). Vaccine hesitancy among this group existed prior to the pandemic and particularly centered around influenza vaccination. Being a physician, having more advanced education, and previous vaccination habits are frequently associated with vaccine acceptance. The relationship between age and caring for patients on COVID-19 vaccination is unclear, with studies providing opposing results. Reasons for hesitancy include concerns about safety and efficacy, mistrust of government and institutions, waiting for more data, and feeling that personal rights are being infringed upon. Many of these reasons reflect previous attitudes about influenza vaccination as well as political beliefs and views of personal autonomy. Finally, several interventions to encourage vaccination have been studied, including education programs and non-monetary incentives with the most effective studies using a combination of methods.