Coverage and predictors of vaccination against 2012/13 seasonal influenza in Madrid, Spain

Jiménez‐García, Rodrigo; Esteban-Vasallo, María D.; Rodríguez-Rieiro, Cristina; Hernández‐Barrera, Valentín; Domínguez‐Berjón, M. Felícitas; Garrido, Pilar Carrasco; López‐de‐Andrés, Ana; Heras, Moises Cameno; Fornies, Domingo Iniesta; Astray‐Mochales, Jenaro

doi:10.4161/hv.27152

Cited by 32 publications

(19 citation statements)

References 23 publications

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“…12,18,28 The contact with health professionals and services increases the likelihood of receiving influenza vaccine. 12,36,37 Finally, as previously observed, 4,12,18,36-38 vaccine uptake was more prevalent among individuals with chronic diseases. According to the evidence, 26,36 having comorbidities may increase the severity of influenza, possibly making this group more motivated to seek vaccination.…”

Section: Discussionsupporting

confidence: 65%

Correlates of influenza vaccine uptake among community-dwelling older adults in Brazil

Andrade

Sato

Moura

et al. 2017

Human Vaccines & Immunotherapeutics

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This study aimed at assessing the factors associated with vaccine uptake in a representative sample of community-dwelling Brazilian older adults, specifically focusing on differences in socioeconomic factors among the country regions. We conducted a cross-sectional, population-based study, using a probabilistic household sample in 2013. Individuals aged 60 years or more answered a structured questionnaire informing on vaccination status and sociodemographic and behavioral covariates. Associations between variables were evaluated using prevalence ratios estimated by Poisson regression models. The overall vaccination coverage (72.6%) in older adults ranked lower than the goal of 80% stipulated by the Brazilian health authority; vaccine uptake differed significantly among the country regions. The prevalence of vaccination was lower in black individuals in Brazil than that in their white counterparts. The prevalence of vaccine uptake was significantly associated with covariates on current life style, use of health care, and socioeconomic determinants. Compared with individuals with 0-3 years of education, more schooled individuals had higher prevalence of vaccine uptake in the North, Northeast, and South regions of the country. This study showed that there is room for increasing vaccination coverage among the elderly in Brazil. The knowledge previously obtained on factors significantly associated with vaccine uptake has not prevented them to continue influencing this outcome. The socioeconomic inequality in vaccination in some Brazilian regions reinforces the need of targeting the intervention toward the most vulnerable groups.

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Section: Discussionsupporting

confidence: 65%

Correlates of influenza vaccine uptake among community-dwelling older adults in Brazil

Andrade

Sato

Moura

et al. 2017

Human Vaccines & Immunotherapeutics

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“…(ii) Information on chronic underlying diseases and vaccination uptake were self-reported and could therefore be subject to misclassification. While a recently published study suggested an overestimation for self-reported seasonal influenza vaccination rates compared to vaccination registries [25] other studies found an adequate degree of reliability [49, 50]. Therefore, it can be assumed that vaccination coverage rates in our study population are rather overestimated.…”

Section: Discussionmentioning

confidence: 73%

“…A decrease in influenza vaccination coverage in at-risk people has also been observed in other European countries after the 2009/10 pandemic [21–24]. A Spanish study found a decrease in vaccination coverage in older adults from 69 % in 2009/10 to 57 % in 2012/13 [25]. However, in countries such as England, no decrease in coverage was observed [26].…”

Section: Discussionmentioning

confidence: 78%

Why are older adults and individuals with underlying chronic diseases in Germany not vaccinated against flu? A population-based study

et al. 2015

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BackgroundOlder adults and individuals with underlying chronic diseases are at increased risk of developing influenza-related complications and are target groups for seasonal influenza vaccination in many countries. In Germany, an annual national information campaign is conducted to increase influenza vaccination uptake in the target groups. However, data are lacking on knowledge and attitudes toward influenza vaccination among older adults and those with chronic diseases. The present study aimed to (i) estimate influenza vaccination uptake for the 2012/13 and 2013/14 seasons, (ii) assess knowledge and attitudes about influenza vaccination, and (iii) identify factors associated with vaccination uptake in two risk groups.MethodsBetween March and June 2014, we conducted a nationwide cross-sectional survey in adults (≥18 years) living in Germany using computer-assisted telephone interviewing. We calculated weighted vaccination coverage rates in two at-risk groups. Group 1 comprised participants aged 18–59 years with underlying chronic diseases. Group 2 comprised participants aged 60+, irrespective of underlying disease. We used univariate and multivariable logistic regression analyses to identify associations between influenza vaccination uptake and sociodemographic characteristics, and to evaluate attitudes and knowledge.ResultsIn total, 1,519 interviews were conducted. Seasonal influenza vaccination uptake in people with underlying chronic diseases aged 18–59 years was 24 % in 2012/2013 and 23 % in 2013/2014. In older adults, uptake was 50 % and 49 % in 2012/13 and 2013/14 respectively. There were considerable vaccination-related knowledge gaps among respondents. For example, about half of the participants who aged ≥60 years and/or suffered from underlying chronic diseases believed that influenza vaccination could cause influenza. The most commonly stated reasons for not being immunized were mistrust of the vaccination (22 %) and the perception that influenza is not dangerous (21 %). For both groups, vaccination uptake was independently associated with sex, perceived severity of influenza, perceived vaccination effectiveness, and the perceived likelihood or severity of vaccination side effects. For older adults, additional factors influencing vaccination uptake were age, underlying chronic diseases, and recent advice through physician consultation.ConclusionsInfluenza vaccination coverage rates in Germany remain low. Individual perceptions regarding harms and benefits are crucial in the decision-making process. Communication strategies should focus on improving understanding and perception of personal risks arising from the disease and the vaccination.

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“…Most of this information concerns paediatric vaccinations in immigrant children and adolescents (e.g., measles, mumps and rubella) [14–17], while information on influenza vaccination uptake in adult immigrants is still limited [18,19]. This study aims to compare influenza vaccination coverage (IVC) between adult regular immigrants and Italian citizens at risk for influenza-related complications and evaluate factors affecting differences.…”

Section: Introductionmentioning

confidence: 99%

Differences in Influenza Vaccination Coverage between Adult Immigrants and Italian Citizens at Risk for Influenza-Related Complications: A Cross-Sectional Study

Fabiani

Riccardo

Napoli³

et al. 2016

PLoS ONE

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BackgroundDue to their increased vulnerability, immigrants are considered a priority group for communicable disease prevention and control in Europe. This study aims to compare influenza vaccination coverage (IVC) between regular immigrants and Italian citizens at risk for its complications and evaluate factors affecting differences.MethodsBased on data collected by the National Institute of Statistics during a population-based cross-sectional survey conducted in Italy in 2012–2013, we analysed information on 42,048 adult residents (≥ 18 years) at risk for influenza-related complications and with free access to vaccination (elderly residents ≥ 65 years and residents with specific chronic diseases). We compared IVC between 885 regular immigrants and 41,163 Italian citizens using log-binomial models and stratifying immigrants by area of origin and length of stay in Italy (recent: < 10 years; long-term: ≥ 10 years).ResultsIVC among all immigrants was 16.9% compared to 40.2% among Italian citizens (vaccination coverage ratio (VCR) = 0.42, 95% confidence interval (CI): 0.36–0.49). Adjusting for sex, age and area of residence, this difference was greatly reduced but remained statistically significant (VCR = 0.71, 95 CI: 0.61–0.81). Further adjustment for socio-economic factors (education, occupation, family composition and economic status) and a composite indicator of health-services utilization did not affect the difference (VCR = 0.78, 95% CI: 0.68–0.90). However, after adjustments, only long-term immigrants from Africa (VCR = 0.49, 95% CI: 0.28–0.85) and recent immigrants (VCR = 0.58, 95% CI: 0.43–0.78) showed a significantly different IVC compared to Italian citizens.ConclusionsDifferences in demographic characteristics, socio-economic conditions and health-services utilization explained the reduced IVC in most long-term immigrants compared to Italian citizens. By contrast, these differences did not explain the reduced IVC in long-term immigrants from Africa and recent immigrants. This suggests that IVC in these sub-groups is affected by other informal barriers (e.g., cultural and linguistic) that need to be investigated to promote effective immunization access strategies.

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Coverage and predictors of vaccination against 2012/13 seasonal influenza in Madrid, Spain

Cited by 32 publications

References 23 publications

Correlates of influenza vaccine uptake among community-dwelling older adults in Brazil

Correlates of influenza vaccine uptake among community-dwelling older adults in Brazil

Why are older adults and individuals with underlying chronic diseases in Germany not vaccinated against flu? A population-based study

Differences in Influenza Vaccination Coverage between Adult Immigrants and Italian Citizens at Risk for Influenza-Related Complications: A Cross-Sectional Study

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