Global influenza vaccination rates and factors associated with influenza vaccination

Chen, Can; Liu, Huan; Yan, Danying; Zhou, Yuqing; Ding, Cheng; Chen, Lu; Lan, Lei; Huang, Chenyang; Zhang, Xiaobao; Guan, Zhou; Fu, Xiaofang; Du, Yuxia; Lin, Yushi; Zhu, Changtai; Wu, Jie; Li, Lanjuan; Yang, Shigui

doi:10.1016/j.ijid.2022.10.038

Cited by 41 publications

(29 citation statements)

References 36 publications

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“…Our findings that patients with chronic diseases, with advanced age, or who are regularly followed up by physicians are more commonly vaccinated were in line with previous research 9,13,41,44–47 . Interestingly, non‐Swiss residents were more likely to be vaccinated compared with Swiss residents unlike reported in a national health survey 44 .…”

Section: Discussionsupporting

confidence: 91%

“…National vaccination uptake rates (VURs) are about 35% among elderly and patients with chronic diseases 6 and thus far below the WHO recommended target of 75% 7,8 . Vaccination rates in Switzerland are in the middle range for Europe 8,9 . Influenza results in as many as 330,000 consultations and up to 5000 hospitalizations annually in Switzerland, and nationwide activities aim to increase vaccination rates 10,11 .…”

Section: Introductionmentioning

confidence: 99%

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Influenza vaccination uptake among at‐risk patients in Switzerland—The potential of national claims data for surveillance

Plate,

Bagnoud,

Rosemann

et al. 2023

Influenza Resp Viruses

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BackgroundSwiss national surveillance of influenza vaccination uptake rates (VURs) relies on self‐reported vaccination status. The aim of this study was to determine VURs among at‐risk patients, namely, patients ≥65 of age and adult patients with chronic diseases, using claims data, instead of self‐reported measures, to investigate factors of vaccine uptake, and to assess different methodological approaches to conduct vaccination surveillance.MethodsIn this retrospective cross‐sectional analysis, we determined VURs in three influenza seasons (2015/2016–2017/2018). Medication, diagnosis, or medical services claims were used as triggers to identify patients. For the calculation of VURs in patients with chronic diseases, we identified those by triggers in the given season only (Model 1) and in the given and previous seasons (Model 2). Regression analysis was used to identify factors associated with vaccination status.ResultsData from 214,668 individual patients were analyzed. VURs over all seasons ranged from 18.4% to 19.8%. Most patients with chronic diseases were identified with the medication trigger, and we found no clinical significant differences in VURs comparing both models. Having a chronic disease, age, male gender, and regular health care provider visits were associated with increased odds of being vaccinated.ConclusionsVURs were below the recommended thresholds, and our analysis highlighted the need for efforts to increase VURs. We assessed the identification of chronic diseases by medication claims and the calculation of VURs based on data of the given season only as an effective approach to conduct vaccination surveillance. Claims data‐based surveillance may complete the national surveillance.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Influenza vaccination uptake among at‐risk patients in Switzerland—The potential of national claims data for surveillance

Plate,

Bagnoud,

Rosemann

et al. 2023

Influenza Resp Viruses

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“…[17][18][19][20] Vaccination rates in this study population were low, but another recent study found that vaccination rates in Italy 11 There are multiple factors that can impact influenza vaccine coverage, including providing free vaccines, perception of vaccine effectiveness or the severity of influenza, and recommendations from healthcare workers. 21 The most recent systematic assessment of influenza vaccine coverage, recommendations and reimbursement in the European Union/European Economic Area (EU/EEA), was conducted in 2018 and found that only 6 of 30 EU/EEA member states recommended vaccination for children and only 3 paid for both the vaccine and its administration. 22 Influenza vaccine coverage data is not widely available for Europe, but 2018 data from the World Health Organization shows that many European countries have similar coverage rates as observed in this study (below 10%).…”

Section: Discussionmentioning

confidence: 99%

Epidemiology and Burden of Influenza in Children 0–14 Years Over Ten Consecutive Seasons in Italy

Barbieri,

Porcu,

Donà

et al. 2023

Pediatric Infectious Disease Journal

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Background: In Europe, influenza vaccination coverage in the pediatric population is low. This study describes the influenza incidence and associated healthcare utilization in the pediatric population in Italy. Methods: Deidentified data from electronic medical records for children 0–14 years old seen by >150 family pediatricians in the Pedianet network in Italy were evaluated for 10 influenza seasons spanning 2010–2020. Incidence of influenza (cases per 1000 person-months), related sequelae and associated healthcare resource use were determined using diagnostic, prescription and medical examination data. Results: Over 10 seasons, an average of 8892 influenza cases (range, 4700–12,419; total 88,921) were diagnosed in a cohort of 1,432,384 children 0–14 years of age. Influenza vaccination coverage was 3.6% among children with an influenza diagnosis and 6.8% among children without. Influenza-related healthcare resource utilization included 1.58 family pediatrician visits per influenza episode and 220 ED and 111 hospital admissions, with the highest resource usage among children 1–4 years and lowest among children <6 months old. The most common influenza complications were acute otitis media (2.9% of influenza cases) and pneumonia (0.5%). Antibiotics were prescribed in 38.7% of influenza cases; no antiviral agents were prescribed. One intensive care unit admission and 2 cases requiring ventilatory support were documented. No influenza-related deaths were reported. Conclusion: Pediatric influenza vaccination was low despite the burden and healthcare use related to seasonal influenza in the pediatric population during a 10-year period in Italy.

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“…Additionally, some associated factors might not be reported, because the included studies did not explore them. For example, vaccination policy and smoking habits were determined to be associated with influenza vaccination willingness [53,54]; trust in the government and information exposure were associated with the COVID-19 vaccine [28,55]. These could be explored in future research.…”

Section: Limitationsmentioning

confidence: 99%

Willingness to Vaccinate Against Herpes Zoster and Its Associated Factors Across WHO Regions: Global Systematic Review and Meta-Analysis

Wang¹,

Yang²,

Li³

et al. 2023

JMIR Public Health Surveill

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Background A life-course immunization approach would enhance the quality of life across all age groups and improve societal well-being. The herpes zoster (HZ) vaccine is highly recommended for older adults to prevent HZ infection and related complications. The proportions of willingness to receive the HZ vaccine varies across countries, and various kinds of factors, including sociodemographics and individual perceptions, influence the willingness to vaccinate. Objective We aim to estimate the HZ vaccination willingness rate and identify factors associated with vaccine uptake willingness across all World Health Organization (WHO) regions. Methods A global systematic search was performed on PubMed, Web of Science, and the Cochrane Library for all papers related to the HZ vaccine published until June 20, 2022. Study characteristics were extracted for each included study. Using double arcsine transformation, vaccination willingness rates with 95% CIs were pooled and reported. The willingness rate and associated factors were analyzed by geographical context. Associated factors were also summarized based on Health Belief Model (HBM) constructs. Results Of the 26,942 identified records, 13 (0.05%) papers were included, covering 14,066 individuals from 8 countries in 4 WHO regions (Eastern Mediterranean Region, European Region, Region of the Americas, and Western Pacific Region). The pooled vaccination willingness rate was 55.74% (95% CI 40.85%-70.13%). Of adults aged ≥50 years, 56.06% were willing to receive the HZ vaccine. After receiving health care workers’ (HCWs) recommendations, 75.19% of individuals were willing to get the HZ vaccine; without HCWs’ recommendations, the willingness rate was only 49.39%. The willingness rate was more than 70% in the Eastern Mediterranean Region and approximately 55% in the Western Pacific Region. The willingness rate was the highest in the United Arab Emirates and the lowest in China and the United Kingdom. The perception of HZ severity and susceptibility was positively associated with vaccination willingness. The perceived barriers to vaccination willingness (main reasons for unwillingness) included low trust in the effectiveness of the HZ vaccine, concerns about safety, financial concerns, and being unaware of the HZ vaccine’s availability. Older individuals, those having lower education, or those having lower income levels were less likely to willing to be vaccinated. Conclusions Only 1 in 2 individuals showed a willingness to be vaccinated against HZ. The willingness rate was the highest in the Eastern Mediterranean Region. Our findings show the critical role HCWs play in promoting HZ vaccination. Monitoring HZ vaccination willingness is necessary to inform public health decision-making. These findings provide critical insights for designing future life-course immunization programs.

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Global influenza vaccination rates and factors associated with influenza vaccination

Cited by 41 publications

References 36 publications

Influenza vaccination uptake among at‐risk patients in Switzerland—The potential of national claims data for surveillance

Influenza vaccination uptake among at‐risk patients in Switzerland—The potential of national claims data for surveillance

Epidemiology and Burden of Influenza in Children 0–14 Years Over Ten Consecutive Seasons in Italy

Willingness to Vaccinate Against Herpes Zoster and Its Associated Factors Across WHO Regions: Global Systematic Review and Meta-Analysis

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