Analysis of public concerns about influenza vaccinations by mining a massive online question dataset in Japan

Nawa, Nobutoshi; Kogaki, Shigetoyo; Takahashi, Kyoko; Ishida, Hidekazu; Baden, Hiroki; Katsuragi, Shinichi; Narita, Jun; Tanaka‐Taya, Keiko; Ozono, Keiichi

doi:10.1016/j.vaccine.2016.01.008

Cited by 17 publications

(15 citation statements)

References 29 publications

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“…By contrast, the participants who did not receive influenza vaccine had no particular reason on first of all reasons. The difference between previous studies and our results may elucidate that public concerns about influenza vaccination changed over time (Iwasa and Wada, 2013; Nawa et al, 2016; Hothersall et al, 2012). Among 20–64 year olds, having no experience of influenza, having economic reason and lacking time to visit hospital significantly differed between educational attainments.…”

Section: Discussioncontrasting

confidence: 99%

Are social inequalities in influenza vaccination coverage in Japan reduced by health policy?

Chinzorig

Sugiyama

Aida

et al. 2019

Preventive Medicine Reports

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Influenza vaccination is effective to prevent influenza infection. However, findings about association between socioeconomic status and influenza vaccination coverage are controversial. Online survey was conducted among 4995 participants between 20 and 69 years of age throughout Japan, January 2017. We asked about history of receiving vaccination in previous year and socioeconomic status, with their reasons for having vaccination or not. Age stratified multivariable logistic regression model was conducted to estimate the odds ratio (ORs) and 95% confidence intervals (CIs) of receiving vaccine for each educational level and income. Sex, self-reported health status, marital status and income were included as covariates. The rate for receiving influenza vaccine among ≤64 year-olds and ≥65 year-olds was 32.9% and 35.4%, respectively. Among younger adults, vaccination varied by each education: junior high school, 23.6%; senior high school, 27.2%; college, 32.6%; university, 36.2%; and graduate school, 39.8%. Compared to junior high school, those from graduate school tended to be more vaccinated (OR1.88, 95%CI 1.07–3.24). On the contrary, those aged above ≥65 years old received vaccination with no significant differences across education. Likewise, among respondents aged ≤64 year-olds, income was significantly associated with influenza vaccination. Despite being “Managed by school or company” (32.5%), having “No particular reason” was the frequent reason for both receiving influenza vaccination (23.8%) or not (34.3%). Adults with higher educational level were significantly more likely to receive vaccination. Subsidizing influenza vaccination may reduce inequality in receiving vaccination for adults. Strengthening vaccination through various approaches is necessary, such as managing by school or company.

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Section: Discussioncontrasting

confidence: 99%

Are social inequalities in influenza vaccination coverage in Japan reduced by health policy?

Chinzorig

Sugiyama

Aida

et al. 2019

Preventive Medicine Reports

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“…published in three papers [36,38,39]; four studies were conducted in African countries: Guinea [40], Sierra Leone [37] or Guinea and Sierra Leone [41] (the degree of overlap between these two 2019 studies is unclear) and French Guiana [42]; and one in Japan [43]. Three studies (four papers) investigated participants with human T-cell lymphotropic virus type 1 (HTLV-1) [36,38,39,42]; three studies examined Ebola [37,40,41], and one explored influenza vaccination [43]. Four papers focused principally on women, mothers and pregnant women with HTLV-1 [36,38,39,42]; one study included a small number of men in its sample [38,39].…”

Section: Plos Onementioning

confidence: 99%

“…The three Ebola studies exclusively explored the views of health providers, managers, government officials, civil servants and staff from international agencies [37,40,41]. The study conducted in Japan did not specify the demographics of the sample [43]. The evidence base was at moderate risk of bias (see S1 Fig): the majority of studies presented a clear question, qualitative design, used appropriate methodology, and reported clear findings; however, only the three studies by Kodish and colleagues [37,40,41] clearly reported rigorous recruitment and data collection and analysis strategies; and only one study adequately addressed the relationships between researchers and participants (reflexivity) [37].…”

Section: Plos Onementioning

confidence: 99%

Qualitative evidence synthesis of values and preferences to inform infant feeding in the context of non-HIV transmission risk

Campbell

Relton

2020

PLoS ONE

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Background Breastfeeding is recommended by many organisations, but feeding choices can take on complexity against a backdrop of a transmissible infection risk. The aim of this synthesis is to explore what is known about the values and preferences of pregnant women, mothers, family members and health practitioners, policy makers and providers (midwives) concerning feeding when there is a risk of Mother-to-Child transmission [MTCT] of an infectious disease (other than HIV/AIDS) to infants (0–2 years of age). Methods A qualitative evidence synthesis and GRADE CERQual assessment of relevant studies of values and preferences regarding infant feeding options in the context of non-HIV MTCT risk. Results The synthesis included eight qualitative studies. Four studies focussed on human T-cell lymphotropic virus type 1 (HTLV-1), three studies on Ebola, and one study on influenza vaccination. Mothers reported feeling sadness and guilt at not breastfeeding, while recognising that it was important for the health of their baby not to breastfeed. Mothers were reportedly appreciative of the provision of appropriate facilities, and the advice of those health professionals who knew about the diseases, but felt other professionals lacked knowledge about the transmission risk of conditions such as HTLV-1. All groups expressed concerns about social perceptions of not breastfeeding, as well as the alternatives. The evidence was coherent and relevant, but there were serious concerns about adequacy and methodological limitations, such as potential social desirability bias in some studies. Conclusions This synthesis describes the reported values and preferences of pregnant women, mothers, and others concerning feeding when there is a risk of Mother-to-Child transmission (MTCT) of an infectious disease (other than HIV/AIDS) to an infant when breastfeeding. However, the evidence in the peer-reviewed literature is limited both in quality and quantity.

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“…9 Both the quantity and quality of influenza vaccination related information may negatively/positively affect immunization programs. 10,11 During the influenza season of 2014-2015, in Italy, in the week from 12 th to 18 th November 2014, three deaths occurred shortly after the administration of Fluad, an inactivated trivalent influenza vaccine, adjuvanted with an oil-in-water emulsion adjuvant (squalene, sodium citrate dihydrate, citric acid monohydrate, polysorbate 80, sorbitan trioleate, MF59C.1), manufactured in Italy by Novartis (Novartis Vaccines and Diagnostics, Inc., NVD), first approved for use in Europe in 1997 and authorized in a number of European Union countries, including Austria, Belgium, Germany, Denmark, Greece, Spain, France, Ireland, Luxembourg, Portugal, and Sweden, as well as in Italy. The first case occurred in a 68-year-old subject who died of myocardial infarction several hours following vaccination.…”

Section: Introductionmentioning

confidence: 99%

An infodemiological investigation of the so-called “Fluad effect” during the 2014/2015 influenza vaccination campaign in Italy: Ethical and historical implications

Mahroum

Watad

Rosselli

et al. 2018

Human Vaccines & Immunotherapeutics

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Influenza vaccines represent a major tool to contain the clinical and epidemiological burden generated by influenza. However, in spite of their effectiveness, vaccines are victims of prejudices and false myths, which contribute to the increasing phenomenon of vaccine hesitancy and loss of confidence. Media and, mainly, new media, and information and communication technologies play a major role in disseminating health-related information. While, on the one hand, they can be extremely promising in promoting disease prevention, on the other hand, they can also have a negative impact on population's health attitudes and behaviors when delivering information not based on scientific evidences. The "Fluad-case" is an excellent example of the crucial role of an adequate information campaign. Following the cluster of deaths allegedly related to the administration of the adjuvanted influenza vaccine "Fluad" during the 2014-2015 influenza campaign, the Italian health authorities and regulatory bodies decided the withdrawal of two potentially contaminated Fluad batches. This fostered a huge media coverage, with resulted in negatively impacting on influenza vaccination coverage. Monitoring and tracking the Fluad-related web searches, we showed that Liguria resulted the Italian region with the highest number of Fluad-related website searches and that, interestingly, Fluad was searched also in Regions in which this vaccine was not distributed. A positive moderate correlation between accessing Fluad-related websites and overall influenza vaccination coverage was found (r = 0.66 ([95%CI 0.29-0.86], p = 0.0026). Considering subjects ≥65 years, who are the subjects for which the Fluad vaccination is recommended, the correlation resulted r = 0.49 ([95%CI 0.03-0.78], p = 0.0397). As such, health authorities and decision-makers should promote high-quality communication campaigns in order to raise awareness of vaccination practices.

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Analysis of public concerns about influenza vaccinations by mining a massive online question dataset in Japan

Cited by 17 publications

References 29 publications

Are social inequalities in influenza vaccination coverage in Japan reduced by health policy?

Are social inequalities in influenza vaccination coverage in Japan reduced by health policy?

Qualitative evidence synthesis of values and preferences to inform infant feeding in the context of non-HIV transmission risk

An infodemiological investigation of the so-called “Fluad effect” during the 2014/2015 influenza vaccination campaign in Italy: Ethical and historical implications

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