Contextualized impacts of an infodemic on vaccine hesitancy: The moderating role of socioeconomic and cultural factors

Serious adverse events following immunization with COVID-19 vaccines in Lebanon: a retrospective analysis of the National Pharmacovigilance Database

Continuous surveillance and risk assessment of inactivated Coronavirus Disease 2019 (COVID-19)) vaccines provide an understanding of their safety profiles, guide vaccination strategy and public health policy. This study aims to analyze the characteristics and prevalence of officially reported serious adverse events following immunization (AEFIs) with inactivated COVID-19 vaccines by System Organ Class (SOC), age, and sex.To achieve this aim, a retrospective observational study was conducted between February 14th, 2021, and June 30th, 2022. Reported AEFIs were evaluated for data completeness. Causality assessment adhered to the World Health Organization guidelines.Findings revealed that the AEFIs occurrence did not significantly differ between vaccines used (ChAdOx1 vs. BNT162b2), sex, or SOC. The most prevalent AEFIs were vascular disorders (37%), followed by cardiac (25%) and nervous system disorders (14%). The adverse events were predominantly reported post-vaccination with the BNT162b2 vaccine, mainly after the first dose. The mean age was highest for miscellaneous disorders (70 ± 21.7 years) and the lowest for nervous system (46 ± 22 years) and immune system disorders (45 ± 19 years). Age differences were statistically different for vascular disorders (p = 0.003) and immune system disorders (p = 0.012).In conclusion, ongoing surveillance and risk assessment of the vaccine's safety profile is crucial for detecting potential safety signals. Active surveillance of the reported serious AEFIs is highly needed to support evidence-based vaccination strategies and maintain public confidence in immunization programs.

Understanding Vaccine Hesitancy: A Comparison of Sociodemographic and Socioeconomic Predictors with Health Literacy Dimensions

Vaccine hesitancy represents a global public health challenge that can diminish the effectiveness of vaccination programs. Research indicates that various sociodemographic and socioeconomic factors, along with health literacy, predict vaccine hesitancy. In this study, we analyzed data from a Slovenian health literacy survey that included 3360 adult participants. We examined the effects of sociodemographic (gender and age) and socioeconomic factors (education, economic deprivation, and self-assessed socioeconomic status), as well as different dimensions of health literacy (general, communicative, and navigational), on vaccine hesitancy. The results show that age, education, and economic deprivation are statistically significant predictors of vaccine hesitancy; younger individuals, those with lower education levels, and those experiencing greater economic deprivation express increased vaccine hesitancy. Higher levels of general and communicative health literacy are associated with lower vaccine hesitancy, while navigational health literacy was not found to be a statistically significant predictor of vaccine hesitancy.

Panic in the Pandemic: Determinants of Vaccine Hesitancy and the Dilemma of Public Health Information Sharing during the COVID-19 Pandemic in Sri Lanka

Vaccine hesitancy, a pressing global challenge in vaccination programs, was significantly amplified during the COVID-19 pandemic. The proliferation of misinformation, including false claims and rumours, and the influence of anti-vaccine movements fuelled hesitancy. This study aims to explore the socio-economic determinants that influenced vaccine hesitancy and the impact of public health information sharing in Sri Lanka during the pandemic. The study employed a comprehensive mixed-method approach for data collection, administrating a household survey (n = 3330) and 206 semi-structured interviews. The survey results indicated that 37.8% (n = 3113) of respondents delayed or rejected vaccines for various reasons, the leading cause being the fear of side effects of the vaccine. Although fear of side effects was the prime reason for rejection (n = 1176, 46.29%), respondents demonstrated an extremely poor understanding of the potential side effects of vaccines, which was 55.39% (n = 3113). Notably, 84.60% (n = 3113) were unaware of the vaccine development process. Multivariate logistic regression analysis showed that middle-income people (AOR-0.42) and females (0.65) were less likely not to make decisions based on scientific information compared to underprivileged people and males. The survey also revealed that strong belief in the use of traditional medicines and remedies and religious beliefs (n = 1176, 3.95%) were among the main reasons for hesitancy. The findings illustrate that misinformation, lack of health knowledge, and lack of understanding to seek scientific information have fuelled vaccine hesitancy in Sri Lanka.

COVID-19 Vaccine Acceptance, Hesitancy, and Uptake in People with Diabetes in Australia

Background: This study explored vaccination hesitancy, diabetes-specific COVID-19 vaccination concerns, and whether they predicted vaccination uptake in people with diabetes. Methods: Quantitative, cross-sectional, and predictive approaches were used. An online survey was conducted with people with diabetes attending four Australian health services, using convenience sampling (n = 842). The survey data collected included clinico-demographic characteristics, COVID-19 vaccine hesitancy, and attitudes around COVID-19 vaccine confidence and complacency. Clinico-demographic characteristics that predicted vaccination status, vaccine hesitancy, and vaccine-related attitudes were identified using regression analyses. Results: Most participants received at least one COVID-19 vaccine dose. Younger age and type 1 diabetes were associated with lower vaccination status, and they were partially mediated through higher vaccine hesitancy. Younger age and English as a dominant language were associated with higher negative attitudes towards speed of vaccine development. Conclusions: Despite an overall high vaccination rate, general and diabetes-specific COVID-19 vaccine concerns are a barrier to uptake for some people with diabetes, particularly in those who are younger or have type 1 diabetes. A detailed understanding of concerns for particular subgroups can help tailor information to increase vaccine acceptance, particularly in the context of requiring booster doses.

Barriers to vaccine acceptance in the adult population of mainland Finland, 2021

There has been a lack of information on vaccine acceptance for Finnish adults. We conducted a secondary analysis of cross-sectional data collected through the Finnish Medicines Agency Medicine Barometer 2021 survey (response rate: 20.6%). We described and explained vaccine acceptance by investigating the associations between socio-demographic factors and statements using logistic regression and conducted a factor analysis. The majority of respondents (n = 2081) considered vaccines to be safe (93%), effective (97%), and important (95%). However, 20% and 14% felt they did not have enough information about vaccines and vaccine-preventable diseases (VPDs), respectively. Respondents aged 18-39 were 2.8 times more likely to disagree that they had enough information about VPDs compared to respondents aged 60-79 (p < 0.001), while respondents with poorer self-perceived health were 1.8 times more likely to declare not having enough information about vaccines (p < 0.001). We generated three-factor dimensions from the eight statements. They were related to 'Confidence and attitudes towards vaccines', 'Access to information on vaccines and VPDs', and 'Debate on vaccine issues', which may reflect the underlying thinking patterns. Access to and understanding of information about vaccines and VPDs need to be improved for Finnish adults to increase vaccine acceptance and uptake, thus preventing the spread of VPDs.

Promoter or barrier? Assessing how social media predicts Covid-19 vaccine acceptance and hesitancy: A systematic review of primary series and booster vaccine investigations

RATIONALE

Prior research indicates that social media is primarily a negative contributor to Covid-19 vaccine outcomes.

OBJECTIVE

The current systematic review of Covid-19 primary series and booster vaccine investigations provides a more nuanced and comprehensive assessment of this association by exploring a) how distinct social media judgments and actions predict different vaccine-related outcomes - perceptions and intentions/uptake, b) both primary series and booster findings, c) types of social media, and d) comparisons across different populations.

METHOD

We conducted a systematic review of published research examining the link between social media and COVID-19 vaccine outcomes - judgments, intentions, and uptake. Overall, we identified 113 published articles.

RESULTS

The findings reveal complex associations between distinct social media predictors and these outcomes. The most consistent negative relationships emerge within studies looking at 'social media as an information source,' 'trust', and 'general social media use/passive exposure' as predictors of less favorable vaccine judgments and intentions/uptake. Conversely, studies focused on 'information seeking' indicate more mixed results. Among the few booster investigations, there are more positive than negative associations between social media predictors and Covid-19 vaccine intentions. Across different social media platforms and sample populations, social media was a less robust/consistent negative predictor of COVID-19 judgments and intentions.

CONCLUSIONS

While social media can contribute to more negative COVID-19 vaccine judgments and motivations, the consistency of this relationship may vary across populations, the platforms users access, and the nature of exposure. Overall, social media campaigns promoting COVID-19 vaccines should employ distinct strategies to target those individuals that value social media as an information resource.

Direct long-acting antibodies: updating the language of RSV prevention to reflect the evolution of mAbs

Introduction

The language of medicine is constantly evolving, typically to better describe a new understanding of disease, adjust to changing social sensibilities, or simply to reflect a new drug class or category. We address the need for an updated language around monoclonal antibodies, or "mAbs" - a widely used medical term, but one which is now too general to accurately reflect the range of mAb pharmaceuticals, their effects, and the intended patients.

Methods

The question of "what should we call a monoclonal antibody immunisation against respiratory syncytial virus (RSV) to ensure accurate understanding of the product?" was the basis for a virtual advisory panel in May 2022. The panel was convened by Sanofi with the intention of reviewing appropriate language in terminology in the context of mAb-based prophylaxis for RSV. The panel comprised several global experts on RSV and vaccination, a trained linguist specialising in doctor-patient interactions and medical language, and several experts in marketing and communications.

Results

We suggest the term "Direct Long-acting Antibody" (DLA) for a specific sub-class of mAbs for use in prevention of RSV disease in infants. This terminology should differentiate from other mAbs, which are generally not used as therapies in infants.

Discussion and Conclusions

This change will more accurately convey the specific mode of action of a mAb in infants, and how it could impact the prevention of communicable diseases: this class of mAbs is not an active treatment, but rather will offer direct and rapid protection lasting at least 5 months.

Information Consumption, Trust Dynamics and COVID-19 Vaccine Hesitancy among Older Adults: Implications for Health Messaging

Staying well informed about the evolving COVID-19 pandemic and vaccine recommendations is vital for older adults, especially for low-income older adults, who have been disproportionately impacted by the pandemic. However, the overwhelming infodemic poses a significant challenge, affecting vaccine decision-making. This study explores how a group of predominantly low-income older adults navigate health information and how their trust in information and vaccines evolves throughout the pandemic. Our objective is to provide insights that will guide future public health messaging for this demographic. Analyzing qualitative data from 77 older adults (aged 65 to 94) collected through focus groups and interviews, our findings reveal that participants' experiences with information overload eroded their trust in authority, leading to vaccine hesitancy. Moreover, the need for a booster has affected belief in vaccine safety and efficacy. As participants lost faith in the media and authoritative sources, they increasingly leaned on personal networks for guidance. These results underscore the urgent necessity for clear, unambiguous ongoing vaccine guidance to restore institutional trust among older adults. Additionally, recognizing the influential role of direct networks in vaccine decisions, integrating care workers, service providers, and peer-to-peer support into health messaging mechanisms could prove valuable.

The Impact of Social Media on Vaccination: A Narrative Review

Vaccine hesitancy poses a significant global health challenge, fueled by misinformation and anti-vaccination campaigns on social media platforms (SMPs). This study examines the influence of social media on coronavirus disease 2019 (COVID-19) and non-COVID-19 vaccination in Asia during the peri-pandemic period. Through a comprehensive analysis of available literature, we aim to elucidate the role of SMPs in shaping vaccination attitudes and behaviors. The findings highlight the detrimental impact of social media on vaccination efforts and provide insights into addressing vaccine hesitancy during this critical period. A narrative review was conducted by searching the PubMed, Scopus, and Google Scholar databases from inception to May 26, 2022. Only English-language articles involving human participants from Asian countries were included in this review. Out of the 228 articles identified through the database search, 14 articles were included in the final analysis. The prevalence of COVID-19 vaccine hesitancy or negative attitudes towards COVID-19 vaccines in Asian countries was found to be high, ranging from 20% to 55% across countries. Notably, reliance on SMPs for vaccine-related information was associated with a higher likelihood of COVID-19 vaccine hesitancy. This trend coincided with the proliferation of misinformation and conspiracy theories that portrayed COVID-19 vaccines as harmful during the pandemic. Similar patterns were observed for other types of vaccines, including polio, measles mumps and rubella, and diphtheria-tetanus-pertussis vaccines. The use of SMPs was also found to be associated with increased fear among caregivers in Asian countries, as well as a 3-4 times higher likelihood of delayed immunization. SMPs negatively impact vaccine intent in Asia due to misinformation and anti-vaccination campaigns during the pandemic. However, they can be a powerful tool for healthcare providers and policymakers to promote informed decision-making. Efforts should focus on leveraging SMPs to disseminate reliable information and combat hesitancy, fostering a well-informed and vaccinated population in Asia.

How Does Digital Media Search for COVID-19 Influence Vaccine Hesitancy? Exploring the Trade-off between Google Trends, Infodemics, Conspiracy Beliefs and Religious Fatalism

Digital media has remained problematic during COVID-19 because it has been the source of false and unverified facts. This was particularly evident in the widespread misinformation and confusion regarding the COVID-19 vaccine. Past research suggested infodemics, conspiracy beliefs, and religious fatalism as potential threats to public COVID-19 vaccine hesitancy. However, the literature is primarily void of empirical evidence associating demographic attributes with efforts to build vaccine hesitancy. Therefore, this research uses two studies: (Study 1) Google Trends and (Study 2) survey method to provide inclusive empirical insight into public use of digital media during COVID-19 and the detrimental effects of infodemics, conspiracy beliefs, and religious fatalism as they were related to building COVID-19 vaccine hesitancy. Using Google Trends based on popular keywords the public searched over one year, Study 1 explores public digital media use during COVID-19. Drawing on this exploration, Study 2 used a cross-sectional national representative survey of 2120 adult Pakistanis to describe the influence of potential hazards such as infodemics on public vaccine hesitancy. Study 2 revealed that infodemics, conspiracy beliefs, and religious fatalism predict vaccine hesitancy. In addition, gender moderates the relationship between infodemics and conspiracy beliefs and vaccine hesitancy. This implies that there is a dispositional effect of the infodemics and conspiracy beliefs spread digitally. This study's findings benefit health and other concerned authorities to help them reduce religious fatalism, vaccine hesitancy, and conspiracy theories with targeted communication campaigns on digital media.

Increased anxiety from fear of Omicron in China as compared to North America and Western Europe: A cross-sectional Kendall's tau-b analysis using the generalized anxiety disorder 7-item questionnaire

BACKGROUND

Policies dealing with the Coronavirus Disease 2019 (COVID-19) pandemic vary across the globe, the different governmental responses then affect the public perception of COVID-19. Many unofficial Chinese media outlets frequently spread misinformation about COVID-19 and exaggerated reports of rare sequelae of Omicron for monetization and attention seeking, leading to panics in the Chinese public. In comparison the attitudes toward Omicron in other countries around the world, especially in North America and Western Europe have shifted to a more relaxed stance.

OBJECTIVE

This article primarily aims to investigate the association between Chinese people's attitudes toward the potential after-effects of Omicron and their anxiety status, as compared to these of people living in North America or Western Europe.

METHODS

We conducted a questionnaire survey via the Credamo and collected valid data from 500 Chinese (not living in Shanghai), another 500 Chinese (living in Shanghai) and 500 people living in North America or Western Europe in June 2022. Kendall's coefficient of rank correlation tau-sub-b was used to examine this association.

RESULTS

The results suggested that subjective attitudes of Chinese participants toward the sequelae of Omicron were positively and significantly associated with their anxiety status [i.e., the Generalized Anxiety Disorder 7-item (GAD-7) scores] in Shanghai (China) (Tb = 0.44, p < 0.01) and other parts of China outside Shanghai (Tb = 0.37, p < 0.01). However, no such significant correlation was found in North America & Western Europe (Tb = -0.01, p > 0.05).

CONCLUSION

Our findings showed that Chinese participants who were more worried about the after-effects of Omicron had higher levels of anxiety. Although it is true that Long COVID-19 should be a concern, exaggerated media reporting can impact negatively on an individual's mental wellbeing. Only through the dissemination of robust scientific studies, the misinformation and the fears that follow it can be put to rest.