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Vaccination sentiment

Ana Wheelock, Marisa Miraldo, Angus Thomson, Charles Vincent, Nick Sevdalis
OBJECTIVES: Despite continuous efforts to improve influenza vaccination coverage, uptake among high-risk groups remains suboptimal. We aimed to identify policy amenable factors associated with vaccination and to measure their importance in order to assist in the monitoring of vaccination sentiment and the design of communication strategies and interventions to improve vaccination rates. SETTING: The USA, the UK and France. PARTICIPANTS: A total of 2412 participants were surveyed across the three countries...
July 12, 2017: BMJ Open
Jingcheng Du, Jun Xu, Hsing-Yi Song, Cui Tao
BACKGROUND: As one of the serious public health issues, vaccination refusal has been attracting more and more attention, especially for newly approved human papillomavirus (HPV) vaccines. Understanding public opinion towards HPV vaccines, especially concerns on social media, is of significant importance for HPV vaccination promotion. METHODS: In this study, we leveraged a hierarchical machine learning based sentiment analysis system to extract public opinions towards HPV vaccines from Twitter...
July 5, 2017: BMC Medical Informatics and Decision Making
Gloria J Kang, Sinclair R Ewing-Nelson, Lauren Mackey, James T Schlitt, Achla Marathe, Kaja M Abbas, Samarth Swarup
OBJECTIVE: To examine current vaccine sentiment on social media by constructing and analyzing semantic networks of vaccine information from highly shared websites of Twitter users in the United States; and to assist public health communication of vaccines. BACKGROUND: Vaccine hesitancy continues to contribute to suboptimal vaccination coverage in the United States, posing significant risk of disease outbreaks, yet remains poorly understood. METHODS: We constructed semantic networks of vaccine information from internet articles shared by Twitter users in the United States...
June 22, 2017: Vaccine
Tsuyoshi Okuhara, Hirono Ishikawa, Masahumi Okada, Mio Kato, Takahiro Kiuchi
Historically, anti-vaccination sentiment has existed in many populations. Mass media plays a large role in disseminating and sensationalizing vaccine objections, especially via the medium of the Internet. Based on studies of processing fluency, we assumed that anti-influenza vaccination online messages to be more readable and more fluently processed than pro-influenza vaccination online messages, which may consequently sway the opinions of some audiences. The aim of this study was to compare readability of anti- and pro-influenza vaccination online messages in Japan using a measure of readability...
June 2017: Preventive Medicine Reports
Jessica Keim-Malpass, Emma M Mitchell, Emily Sun, Christine Kennedy
OBJECTIVES: Given the degree of public mistrust and provider hesitation regarding the human papillomavirus (HPV) vaccine, it is important to explore how information regarding the vaccine is shared online via social media outlets. The purpose of this study was to evaluate the content of messaging regarding the HPV vaccine on the social media and microblogging site Twitter, and describe the sentiment of those messages. DESIGN AND SAMPLE: This study utilized a cross-sectional descriptive approach...
July 2017: Public Health Nursing
Jingcheng Du, Jun Xu, Hsingyi Song, Xiangyu Liu, Cui Tao
BACKGROUND: Analysing public opinions on HPV vaccines on social media using machine learning based approaches will help us understand the reasons behind the low vaccine coverage and come up with corresponding strategies to improve vaccine uptake. OBJECTIVE: To propose a machine learning system that is able to extract comprehensive public sentiment on HPV vaccines on Twitter with satisfying performance. METHOD: We collected and manually annotated 6,000 HPV vaccines related tweets as a gold standard...
March 3, 2017: Journal of Biomedical Semantics
Philip M Massey, Amy Leader, Elad Yom-Tov, Alexandra Budenz, Kara Fisher, Ann C Klassen
BACKGROUND: Human papillomavirus (HPV) is the most common sexually transmitted infection in the United States. There are several vaccines that protect against strains of HPV most associated with cervical and other cancers. Thus, HPV vaccination has become an important component of adolescent preventive health care. As media evolves, more information about HPV vaccination is shifting to social media platforms such as Twitter. Health information consumed on social media may be especially influential for segments of society such as younger populations, as well as ethnic and racial minorities...
December 5, 2016: Journal of Medical Internet Research
Guido Antonio Powell, Kate Zinszer, Aman Verma, Chi Bahk, Lawrence Madoff, John Brownstein, David Buckeridge
BACKGROUND: A system for monitoring vaccine-related media content was previously developed and studied from an international perspective. This monitoring approach could also have value at a regional level, but it has yet to be evaluated at this scale. We examined regional patterns of vaccine-related media topics and sentiment in the US and Canada. METHODS: We extracted vaccine-relevant US and Canadian online media reports between June 2012 and October 2014 from the Vaccine Sentimeter, a HealthMap-based automated media monitoring system for news aggregators and blogs...
December 7, 2016: Vaccine
Wayne M Getz, Colin Carlson, Eric Dougherty, Travis C Porco Francis, Richard Salter
The winter 2014-15 measles outbreak in the US represents a significant crisis in the emergence of a functionally extirpated pathogen. Conclusively linking this outbreak to decreases in the measles/mumps/rubella (MMR) vaccination rate (driven by anti-vaccine sentiment) is critical to motivating MMR vaccination. We used the NOVA modeling platform to build a stochastic, spatially-structured, individual-based SEIR model of outbreaks, under the assumption that R0 ≈ 7 for measles. We show this implies that herd immunity requires vaccination coverage of greater than approximately 85%...
April 2016: Agent-Directed Simulation Symposium (ADS)
Heidi J Larson, Alexandre de Figueiredo, Zhao Xiahong, William S Schulz, Pierre Verger, Iain G Johnston, Alex R Cook, Nick S Jones
BACKGROUND: Public trust in immunization is an increasingly important global health issue. Losses in confidence in vaccines and immunization programmes can lead to vaccine reluctance and refusal, risking disease outbreaks and challenging immunization goals in high- and low-income settings. National and international immunization stakeholders have called for better monitoring of vaccine confidence to identify emerging concerns before they evolve into vaccine confidence crises. METHODS: We perform a large-scale, data-driven study on worldwide attitudes to immunizations...
October 2016: EBioMedicine
Jon Wardle, Jane Frawley, Amie Steel, Elizabeth Sullivan
BACKGROUND: Vaccination is one of the most significant and successful public health measures of recent times. Whilst the use of complementary medicine (CM) continues to grow, it has been suggested that CM practitioners hold anti-vaccination views. The objective of this critical review is to examine the evidence base in relation to CM practitioner attitudes to childhood vaccination alongside attitudes to vaccination among parents who visit CM practitioners and/or use CM products. METHODS: A database search was conducted in MEDLINE, PubMed, CINAHL, EMBASE and AMED for research articles published between January 2000 and September 2015 that evaluated either CM practitioner or CM user attitudes and intention towards childhood vaccination...
August 31, 2016: Vaccine
R Rosselli, M Martini, N L Bragazzi
The phenomenon known as vaccine hesitancy (a term that includes the concepts of indecision, uncertainty, delay and reluctance) is complex, closely linked to social contexts, and has different determinants: historical period, geographical area, political situation, complacency, convenience and confidence in vaccines. The World Health Organization (WHO) recommends that vaccine hesitancy and any proxy of it should be constantly monitored. Given the growing importance and pervasiveness of information and communication technologies (ICTs), the new media could be exploited in order to track lay-people's perceptions of vaccination in real time, thereby enabling health-care workers to actively engage citizens and to plan ad hoc communication strategies...
2016: Journal of Preventive Medicine and Hygiene
Karen K Wong, Adam L Cohen, Shane A Norris, Neil A Martinson, Claire von Mollendorf, Stefano Tempia, Sibongile Walaza, Shabir A Madhi, Meredith L McMorrow, Ebrahim Variava, Katlego M Motlhaoleng, Cheryl Cohen
BACKGROUND: Understanding knowledge and sentiment toward influenza and vaccination is important for effective health messages and prevention strategies. We aimed to characterize knowledge, attitudes, and practices surrounding influenza illness and vaccination in two South African communities and explore reasons for vaccine hesitancy. METHODS: Household primary caregivers in Soweto and Klerksdorp townships were interviewed about knowledge of influenza and intention to receive an influenza vaccine using a structured questionnaire...
September 2016: Influenza and Other Respiratory Viruses
Chi Y Bahk, Melissa Cumming, Louisa Paushter, Lawrence C Madoff, Angus Thomson, John S Brownstein
Real-time monitoring of mainstream and social media can inform public health practitioners and policy makers about vaccine sentiment and hesitancy. We describe a publicly available platform for monitoring vaccination-related content, called the Vaccine Sentimeter. With automated data collection from 100,000 mainstream media sources and Twitter, natural-language processing for automated filtering, and manual curation to ensure accuracy, the Vaccine Sentimeter offers a global real-time view of vaccination conversations online...
February 2016: Health Affairs
Rosemary Joyce Burnett, Lauren Jennifer von Gogh, Molelekeng H Moloi, Guido François
BACKGROUND: The South African Vaccination and Immunisation Centre receives many requests to explain the validity of internet-based anti-vaccination claims. Previous global studies on internet-based anti-vaccination lobbying had not identified anti-vaccination web pages originating in South Africa (SA). OBJECTIVE: To characterise SA internet-based anti-vaccination lobbying. METHODS: In 2011, searches for anti-vaccination content were performed using Google, Yahoo and MSN-Bing, limited to English-language SA web pages...
November 2015: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
Meghan Bridgid Moran, Lauren B Frank, Joyee S Chatterjee, Sheila T Murphy, Lourdes Baezconde-Garbanati
OBJECTIVE: A significant number of parents delay or refuse vaccinating their children. Incidental exposure to vaccine information (i.e., scanned information) may be an important contributor to anti-vaccine sentiment. This study examines the association between scanned information, trust in health information sources and vaccine safety concerns among African American, Mexican American, and non-Hispanic White women. METHODS: Women (N=761) in Los Angeles County were sampled via random digit dial and surveyed regarding use of and trust in health information resources and vaccine safety concerns...
January 2016: Patient Education and Counseling
Stephanie P Kowal, Cynthia G Jardine, Tania M Bubela
OBJECTIVE: To understand information-gathering and decision-making processes of immigrant mothers for scheduled childhood vaccines, vaccination during pregnancy, seasonal flu and pandemic vaccination. METHODS: We conducted 23 qualitative semi-structured interviews with immigrated mothers from Bhutanese refugee, South Asian and Chinese communities. Participants lived in Edmonton, Alberta and had at least one child under eight years old. Using NVivo qualitative software, we generated an inductive coding scheme through content analysis of interview transcripts...
May 2015: Canadian Journal of Public Health. Revue Canadienne de Santé Publique
Xujuan Zhou, Enrico Coiera, Guy Tsafnat, Diana Arachi, Mei-Sing Ong, Adam G Dunn
The manner in which people preferentially interact with others like themselves suggests that information about social connections may be useful in the surveillance of opinions for public health purposes. We examined if social connection information from tweets about human papillomavirus (HPV) vaccines could be used to train classifiers that identify anti-vaccine opinions. From 42,533 tweets posted between October 2013 and March 2014, 2,098 were sampled at random and two investigators independently identified anti-vaccine opinions...
2015: Studies in Health Technology and Informatics
Yang Lei, Jennifer A Pereira, Susan Quach, Julie A Bettinger, Jeffrey C Kwong, Kimberly Corace, Gary Garber, Yael Feinberg, Maryse Guay
BACKGROUND: The aim of this study was to understand online public perceptions of the debate surrounding the choice of annual influenza vaccinations or wearing masks as a condition of employment for healthcare workers, such as the one enacted in British Columbia in August 2012. METHODS: Four national and 82 local (British Columbia) Canadian online news sites were searched for articles posted between August 2012 and May 2013 containing the words "healthcare workers" and "mandatory influenza vaccinations/immunizations" or "mandatory flu shots and healthcare workers...
2015: PloS One
Yael Feinberg, Jennifer A Pereira, Susan Quach, Jeffrey C Kwong, Natasha S Crowcroft, Sarah E Wilson, Maryse Guay, Yang Lei, Shelley L Deeks
BACKGROUND: Given the variation in human papillomavirus (HPV) vaccine coverage across Canada, and debate regarding delivery of HPV vaccines in Catholic schools, we studied online comments on Canadian news websites to understand public perceptions of HPV and HPV vaccine. METHODS: We searched English- and French-language Canadian news websites for 2012 articles that contained the terms "HPV" or "human papillomavirus." Articles about HPV vaccinations that contained at least one comment were included...
2015: PloS One
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