Randomised active programs on healthcareworkers’ flu vaccination in geriatric health care settings in France: The VESTA study

Background  

Because of a lack of efficacy of influenza vaccination in elderly population, there are still numerous outbreaks in geriatric health care settings. The health care workers (HCW) flu vaccination is known to get herd immunity and decrease the impact of influenza in elderly population living in geriatric health care settings. However, the rates of vaccinated HCWs are still low in France. The French Geriatric Infection Risk Institute (ORIG) performed the VESTA study, a three-phase multicentre to identify factors limiting vaccination in HCWs, and to develop and implement active programs promoting HCWs influenza vaccination.     

Rates of influenza vaccination in older adults and factors associated with vaccine use: A secondary analysis of the Canadian Study of Health and Aging

Background  

Influenza vaccination has been shown to reduce morbidity and mortality in the older adult population. In Canada, vaccination rates remain suboptimal. We identified factors predictive of influenza vaccination, in order to determine which segments of the older adult population might be targeted to increase coverage in influenza vaccination programs.     

A(H1N1) pandemic influenza and its prevention by vaccination: Paediatricians' opinions before and after the beginning of the vaccination campaign

Background  

In June 2009, the World Health Organization declared an A(H1N1) influenza pandemic. In October 2009, the largest vaccination campaign in Canadian history began. The aim of this study was to document paediatricians' knowledge, attitudes and practices (KAP) regarding A(H1N1) pandemic influenza and its prevention by vaccination just after the beginning of the A(H1N1) vaccination campaign and to compare the results with those obtained before campaign initiation.     

Healthcare workers as parents: attitudes toward vaccinating their children against pandemic influenza A/H1N1

Background  

Both the health care workers (HCWs) and children are target groups for pandemic influenza vaccination. The coverage of the target populations is an important determinant for impact of mass vaccination. The objective of this study is to determine the attitudes of HCWs as parents, toward vaccinating their children with pandemic influenza A/H1N1 vaccine.     

Knowledge and attitudes of university students toward pandemic influenza: a cross-sectional study from Turkey

Background  

During an influenza pandemic, higher education institutions with large populations of young adults can become serious outbreak centers. Since outbreak management is essential to disease control, we aimed to examine university students' knowledge of and attitudes toward the pandemic influenza A/H1N1 and vaccination and other preventive measures.     

Influenza vaccination among healthcare workers in a multidisciplinary University hospital in Italy

Background  

Annual influenza vaccination is recommended for healthcare workers (HCWs) in order to reduce the morbidity associated with influenza in healthcare settings. The aim of this study was to evaluate the current vaccination status of the HCWs in one of Italy's largest multidisciplinary University Hospitals.     

Development and psychometric validation of a self-administered questionnaire assessing the acceptance of influenza vaccination: the Vaccinees' Perception of Injection (VAPI?) questionnaire

Background  

Influenza is among the most common infectious diseases. The main protection against influenza is vaccination. A self-administered questionnaire was developed and validated for use in clinical trials to assess subjects' perception and acceptance of influenza vaccination and its subsequent injection site reactions (ISR).     

Factors associated with influenza vaccination status of residents of a rural community in Japan

Background  

The rate of influenza vaccination in Japan has declined over the past several decades. It is essential to identify community-specific factors that affect attitudes toward vaccination, but such parameters have not yet been fully determined in Japan. The present study used the Health Belief Model (HBM) to identify perceptions of influenza vaccination in a rural Japanese community.     

Influenza vaccination coverage of healthcare workers and residents and their determinants in nursing homes for elderly people in France: a cross-sectional survey

Background  

Nursing home residents bear a substantial burden of influenza morbidity and mortality. Vaccination of residents and healthcare workers (HCWs) is the main strategy for prevention. Despite recommendations, influenza vaccination coverage among HCWs remains generally low.     

Determinants of adults' intention to vaccinate against pandemic swine flu

Background  

Vaccination is one of the cornerstones of controlling an influenza pandemic. To optimise vaccination rates in the general population, ways of identifying determinants that influence decisions to have or not to have a vaccination need to be understood. Therefore, this study aimed to predict intention to have a swine influenza vaccination in an adult population in the UK. An extension of the Theory of Planned Behaviour provided the theoretical framework for the study.     

Non-adjuvanted 2009 influenza A (H1N1)v vaccine in pregnant women: the results of a French prospective descriptive study

In 2009, during the influenza A (H1N1)v pandemic, the French Health authorities recommended influenza immunisation for pregnant women because of the higher risk of serious influenza outcomes in that population. Thus, the non-adjuvanted inactivated influenza vaccine Panenza^® was administered to French women from the second trimester of pregnancy. Several studies suggest that inactivated seasonal influenza vaccines are safe during pregnancy but there are few data about the effects of new A (H1N1)vaccines (new antigen) on pregnant women.

Objective

The aim of the present prospective study was to describe pregnancy outcomes among women vaccinated with non-adjuvanted influenza vaccines in South Western France.

Methods

the study ran from November 2009 to February 2010 and included, on a voluntary basis, pregnant women who were vaccinated against A (H1N1) influenza in vaccination clinics or maternity wards.

Results

569 pregnant women were monitored until delivery. Compared with the general population, the risks of maternal conditions, malformations and neonatal conditions were not statistically different.

Conclusion

This study does not reveal any sign of safety concerns regarding the effects of the vaccine on pregnancy outcomes.     

Statut vaccinal des médecins généralistes dans le département de la Loire,France

Objectives

We surveyed the vaccination status of family physicians (FP) in the Loire district (France) in 2010.

Subjects and methods

A self-administered questionnaire was proposed to a panel of 460 FP; 288 (64%) answered.

Results

The vaccination coverage for Diphtheria-Tetanus-Polio in the previous 10 years, BCG, pertussis, seasonal influenza, A/H1N1 2009 influenza, and hepatitis B was 81, 74, 59, 73, 65, and 87% respectively. Sixty-four percent of FP reported they were vaccinated against measles and 49% against chicken pox; 76% were aware of vaccination recommendations for healthcare professionals but 41% wanted more information on the subject. The younger physicians were better vaccinated for Diphtheria-Tetanus-Polio, measles, hepatitis B, and influenza according to a multivariate analysis.

Conclusions

The vaccinations of FP (knowledge, practice) must be improved, especially by yearly updates, continuous medical education, and medical follow-up of healthcare professionals.     

Impact de la pandémie de grippe A sur la vaccination des médecins généralistes français contre la grippe saisonnière : suivi d’une cohorte entre 2007 et 2010

BackgroundOur objective was to assess the impact of the A influenza pandemic on the anti-seasonal influenza vaccination of French general practitioners.MethodsA survey was conducted in 2007 in a random sample of general practitioners. A second survey conducted in 2010 included all general practitioners who had not been vaccinated in 2007 and one-third of those who had been.ResultsResponses were obtained from 1010 general practitioners in 2007. The coverage rate of anti-seasonal influenza vaccination reached 73%. In 2010, the coverage was 73.5% and rate of anti-A influenza vaccination was 59% (weighted numbers). Between the two surveys, 130 family physicians (15.5%) changed their behavior. Analysis showed that the A influenza pandemic had a slight positive impact on anti-seasonal influenza vaccination.ConclusionThis first cohort of French general practitioners concerning influenza vaccination found the same anti-seasonal influenza vaccination rates widely reported in the literature and showed that the A influenza pandemic had slight impact on it.     

Variations in influenza vaccination coverage among the high-risk population in Sweden in 2003/4 and 2004/5: a population survey

Background  

In Sweden, the vaccination campaign is the individual responsibility of the counties, which results in different arrangements. The aim of this study was to find out whether influenza vaccination coverage rates (VCRs) had increased between 2003/4 and 2004/5 among population at high risk and to find out the influence of personal preferences, demographic characteristics and health care system characteristics on VCRs.     

Determinants of uptake of influenza vaccination among pregnant women – A systematic review

Background

Pregnant women have the highest priority for seasonal influenza vaccine. However, suboptimal coverage has been repeatedly noted in this population. To improve vaccine uptake, reviewing the determinants of vaccination is of increasing importance.

Methods

A detailed literature search was performed up to November 30, 2013 to retrieve articles related to uptake of influenza vaccination during pregnancy.

Results

Forty-five research papers were included in the review. Twenty-one studies assessed the coverage of seasonal influenza vaccination, 13 studies assessed coverage of A/H1N1 pandemic vaccination and 11 studies assessed both. Vaccination uptake ranged from 1.7% to 88.4% for seasonal influenza, and from 6.2% to 85.7% for A/H1N1 pandemic influenza. Many pregnant women were unaware that they were at high risk for influenza and its complications during pregnancy. They were also more likely to underestimate the threat of influenza to themselves and their fetus. Moreover, they had substantial concerns about the safety and efficacy of the influenza vaccine during pregnancy. Negative media reports contributed to the perception that influenza vaccination during pregnancy was risky and could result in adverse pregnancy outcomes. Although health care providers’ (HCPs) recommendations were consistently associated with vaccine uptake, most did not recommend the vaccine to their pregnant clients.

Conclusions

Influenza vaccination uptake among pregnant women is suboptimal and HCPs rarely recommend it. Positive vaccination recommendations from HCPs as well as direct access to the vaccine would likely substantially improve vaccination acceptance.     

Insuffisance de couverture vaccinale d’une cohorte française de patients séropositifs VIH

Introduction

HIV patients have a high rate of infectious complications. Vaccination, though less efficient in case of severe immunosuppression, can prevent some of these infections. Since 2006, new vaccine recommendations have been elaborated in France. We studied the vaccine status of HIV+ patients for influenza, Streptococcus pneumoniae, tetanus, and hepatitis A and B among an alsatian HIV+ population.

Patients and methods

From August 20, 2007 to September 15, 2007, HIV patients of the Alsace HIV center (COREVIH) were included in a prospective study, screening demographic, medical, immunovirologic, and vaccination data.

Results

Three hundred and thirty-one patients were included, 49% of whom were asymptomatic, 29% symptomatic without AIDS, 18% at AIDS stage, and no documentation for 4%. Seventy-one patients (21.4%) were vaccinated against influenza, 11 (3.3%) against Streptococcus pneumoniae, 34 against HAV (only 16.3% of patients with a negative test before), 120 against HBV (60% of patients with no serological markers before), and 186 (56.2%) against tetanus. The most frequent reasons for non-vaccination were non-proposal by physicians, lack of expected effectiveness, and fear of an immunovirological adverse effect.

Conclusion

Vaccination coverage for recommended vaccines of HIV infected people remains at a low level and appears sometimes inferior to the rates reached among the general French population. It is necessary to inform prescribers and HIV positive patients about the interest of vaccination.     

The determinants of 2009 pandemic A/H1N1 influenza vaccination: a systematic review

Background

Pandemic A/H1N1 influenza vaccine coverage varied widely across countries. To understand the factors influencing pandemic influenza vaccination and to guide the development of successful vaccination programs for future influenza pandemics, we identified and summarized studies examining the determinants of vaccination during the 2009 influenza pandemic.

Methods

We performed a systematic literature review using the PubMED electronic database from June 2009 to February 2011. We included studies examining an association between a possible predictive variable and actual receipt of the pandemic A/H1N1 influenza vaccine. We excluded studies examining intention or willingness to receive the vaccine.

Results

Twenty-seven studies were identified from twelve countries. Pandemic influenza vaccine coverage varied from 4.8% to 92%. Coverage varied by population sub-group, country, and assessment method used. Most studies used questionnaires to estimate vaccine coverage, however seven (26%) used a vaccination registry. Factors that positively influenced pandemic influenza vaccination were: male sex, younger age, higher education, being a doctor, being in a priority group for which vaccination was recommended, receiving a prior seasonal influenza vaccination, believing the vaccine to be safe and/or effective, and obtaining information from official medical sources.

Conclusions

Vaccine coverage during the pandemic varied widely across countries and population sub-groups. We identified some consistent determinants of this variation that can be targeted to increase vaccination during future influenza pandemics.     

Seasonal influenza vaccination coverage in France during two influenza seasons (2007 and 2008) and during a context of pandemic influenza A(H1N1) in 2009

Objectives

To measure the seasonal influenza vaccination coverage rate (VCR) in France in 2009, year of the A(H1N1) influenza pandemic, by age and target disease and compare it with the VCR for the 2007 and 2008 influenza seasons.

Method

At the beginning of each annual seasonal vaccination campaign, the National Health Insurance, covering 86% of the French population, sends free influenza vaccination vouchers to at-risk beneficiaries aged under 65 suffering from diverse chronic diseases and to all individuals aged 65 and over (around 11 million). Vaccination is estimated from refund claims registered in the National Health Insurance Information System.

Results

The global VCR for the target population was 51% in 2007, 55.8% in 2008 and 56.9% in 2009. In 2009, the VCR for children under 10 years old was 24.3%, 28.1% in the 10-19 age range, 39.2% in the 20-64 age range and 63.3% for individuals aged 65 and over, of which 72.3% with a targeted chronic disease and 56.9% without. The inclusion of asthma as a target disease, lowered the global VCR for children under 10 years old (30.6% without asthma) but VCR increased proportionally with the number of annual refunds for drugs against asthma and chronic obstructive pulmonary disease. The 2009 vaccine uptake rates in target group children, adolescents, young adults and to a lesser extent the population aged 65 and over suffering from a chronic disease (particularly chronic respiratory disease), could have been positively impacted by the A(H1N1) influenza context.

Conclusion

The influenza VCR varies considerably according to age and target disease but globally remains inferior to the recommended 75% coverage rate. These results permit the detailed analysis of VCR distribution by disease and target group and highlights areas for reflection and action. Specific studies should be conducted in order to understand why the VCR is lower in certain target groups.