Did the European suspension of the AstraZeneca vaccine decrease vaccine acceptance during the COVID-19 pandemic?

Petersen, Michael Bang; Jørgensen, Frederik; Lindholt, Marie Fly

doi:10.1016/j.vaccine.2021.12.026

Cited by 15 publications

(21 citation statements)

References 9 publications

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“…The MoH's decision to suspend this vaccine after AEFIs was critically reported to be abrupt and confusing, while other articles argued it was slow and irresponsible. Similar situations with HPV vaccine in Japan, Hepatitis B vaccine in China and Astra Zeneca COVID-19 vaccine in Europe showed that a suspension policy itself can decrease public vaccine confidence 11,21,50 , negative framing of the decision in mainstream news can amplify anxiety. As the situation progressed, most subsequent articles added an explanation from the MoH in an attempt to balance the confusion.…”

Section: Discussionmentioning

confidence: 95%

Media portrayal of vaccine: a content analysis of Vietnam online news about a pentavalent vaccine in the Expanded Program of Immunization.

Hà

Yến²,

Nuil³

et al. 2022

Wellcome Open Res

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Background: Vaccine hesitancy has become a prominent public health concern, particularly within the coronavirus disease 2019 (COVID-19) pandemic context. Worries about vaccine side effects are often cited as a reason for hesitancy, while media reporting about this topic plays an important role in influencing the public’s perspectives about vaccines and vaccination. In Vietnam, during 2012-2013, there were several adverse events following immunization (AEFIs) of Quinvaxem– a pentavalent vaccine in the Expanded Immunization Program, which made big headlines in the media. Such incidences have contributed to changes in vaccination policies and influenced parents’ concerns to date. This study explores the portrayal of Quinvaxem in Vietnam digital news during four periods marked by important events. Methods: We performed quantitative and qualitative analysis with a coding framework to identify main content focus, sentiments towards Quinvaxem, and emotional tones in these articles. Results: In total, we included 360 articles into analysis. The amount of news coverage about Quinvaxem increased after AEFIs happened, from 7 articles before AEFIs to 98 and 159 articles in the following periods when AEFIs and investigation into vaccine safety occurred. Most articles are neutral in titles (n=255/360) and content (n=215/360) towards Quinvaxem and do not convey emotional expressions (n=271/360). However, articles focusing on side effects contain negative sentiments and emotional expressions more frequently than articles of other contents while AEFIs details were conflicting across articles. Vaccine sentiments are provoked in the information about vaccine quality and safety, health authority, local delivery, and quoted vaccine opinions. Emotion-conveying elements in 89/360 articles included emotional wording and imagery and expressive punctuation. Conclusions: The heterogeneity of information in online news may reinforce uncertainty about vaccine safety and decrease vaccine intention. Our results have important implications for vaccine communication, given the current plan of the Vietnamese government to roll out COVID-19 vaccination to younger children.

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Section: Discussionmentioning

confidence: 95%

Media portrayal of vaccine: a content analysis of Vietnam online news about a pentavalent vaccine in the Expanded Program of Immunization.

Hà

Yến²,

Nuil³

et al. 2022

Wellcome Open Res

View full text Add to dashboard Cite

show abstract

“…Even after the positive verdict of the European Medicines Agency (EMA) eight days after the stop, the climate of uncertainty [ 19 ] continued to impact on the vaccination campaign, leading to the phenomenon of vaccine hesitation. This meant reluctance, delay and indecision about being vaccinated out of fear of having adverse reaction to the shot, eventually leading to increased distrust about vaccines and pharmaceutical regulation institutions.…”

Section: Resultsmentioning

confidence: 99%

Covid-19 vaccines in Italian public opinion: Identifying key issues using Twitter and Natural Language Processing

Stracqualursi

Agati²

2022

PLoS ONE

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The COVID-19 pandemic has changed society and people’s lives. The vaccination campaign started December 27th 2020 in Italy, together with most countries in the European Union. Social media platforms can offer relevant information about how citizens have experienced and perceived the availability of vaccines and the start of the vaccination campaign. This study aims to use machine learning methods to extract sentiments and topics relating to COVID-19 vaccination from Twitter. Between February and May 2021, we collected over 71,000 tweets containing vaccines-related keywords from Italian Twitter users. To get the dominant sentiment throughout the Italian population, spatial and temporal sentiment analysis was performed using VADER, highlighting sentiment fluctuations strongly influenced by news of vaccines’ side effects. Additionally, we investigated the opinions of Italians with respect to different vaccine brands. As a result, ‘Oxford-AstraZeneca’ vaccine was the least appreciated among people. The application of the Dynamic Latent Dirichlet Allocation (DLDA) model revealed three fundamental topics, which remained stable over time: vaccination plan info, usefulness of vaccinating and concerns about vaccines (risks, side effects and safety). To the best of our current knowledge, this one the first study on Twitter to identify opinions about COVID-19 vaccination in Italy and their progression over the first months of the vaccination campaign. Our results can help policymakers and research communities track public attitudes towards COVID-19 vaccines and help them make decisions to promote the vaccination campaign.

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“…48 Furthermore, ChAdOx1-S [recombinant] was initially widely distributed due to less restrictive storage conditions, but the safety concerns amplified rumors and led to lower uptake. 49 Hence, only eight African countries managed to use their received COVAX doses, nine nations administered less than a quarter of their doses, and 15 nations administered less than half of the received COVID-19 doses, according to WHO.…”

Section: Discussionmentioning

confidence: 99%

Challenges to COVID-19 vaccine introduction in the Democratic Republic of the Congo – a commentary

Matuvanga¹,

Doshi

Muya

et al. 2022

Human Vaccines & Immunotherapeutics

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COVID-19 vaccination in the Democratic Republic of the Congo (DRC) began in April 2021. A month later, most COVID-19 vaccine doses were reallocated to other African countries, due to low vaccine uptake and the realization that the doses would expire before use. Based on data available on 13 August 2022, 2.76% of the DRC population had been fully vaccinated with last dose of primary series of COVID-19 vaccine, placing the country second to last in Africa and in the last five in global COVID-19 vaccination coverage. The DRC’s reliance on vaccine donations requires continuous adaptation of the vaccine deployment plan to match incoming COVID-19 vaccines shipments. Challenges in planning vaccine deployments, vaccinating priority populations, coordinating, and implementing the communications plan, disbursing funds, and conducting supervision of vaccination activities have contributed to low COVID-19 vaccine coverage. In addition, the spread of rumors through social media and by various community and religious leaders resulted in high levels of vaccine hesitancy. A strong risk communication and community engagement plan, coupled with innovative efforts to target the highest-risk populations are critical to increase vaccine uptake during the next phase of COVID-19 vaccine introduction.

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Did the European suspension of the AstraZeneca vaccine decrease vaccine acceptance during the COVID-19 pandemic?

Cited by 15 publications

References 9 publications

Media portrayal of vaccine: a content analysis of Vietnam online news about a pentavalent vaccine in the Expanded Program of Immunization.

Media portrayal of vaccine: a content analysis of Vietnam online news about a pentavalent vaccine in the Expanded Program of Immunization.

Covid-19 vaccines in Italian public opinion: Identifying key issues using Twitter and Natural Language Processing

Challenges to COVID-19 vaccine introduction in the Democratic Republic of the Congo – a commentary

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