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Social media have been playing a critical role in seeking and sharing health related information and consequently shaping individuals’ health behaviors. This study investigates how information seeking about Covid-19 vaccine on social media is related to vaccine receiving intentions. The study furthers explores the association of trust in social media and uncertainty about Covid-19 with information seeking and the moderating role of prior social media experience on this association.

We developed a questionnaire and collected data from 525 educated social media users through “Google Forms.” Further, we applied ordinary least squares (OLS) regress to test the study hypothesis.

We noted that trust in social media and uncertainty about Covid-19 vaccine positively influenced information seeking which further positively affected vaccine receiving intentions. However, the moderating effect of prior social media experience was not only noted as weak but also found negatively affecting the associations of trust in social media and uncertainty about Covid-19 vaccine with information seeking.

The findings provide insights into understanding of public perceptions regarding Covid-19 vaccine in the cultural contexts of a developing country. Further, it informs about the public patterns of seeking information related to health issues on social media, an understanding which may likely benefit policymakers, health care providers and researchers to understand the antecedents and behavioral outcomes of seeking information through social media during health crisis. The study also elucidates the leveraging power of social media to motivate the public to accept the Covid-19 vaccines.

The study uniquely combines the antecedents and behavioral outcomes of information seeking through social media in the particular context of Covid-19. It further extends the literature by introducing the conditional role of prior social media experience.

Despite significant progress in Iran's immunization programs, vaccine policymaking in the country still faces various challenges and shortcomings. To address these issues and ensure sustained progress toward achieving comprehensive vaccination policies, it is essential to identify the critical factors influencing vaccine policies in Iran. Our study aims to provide evidence-based insights that can inform the development of effective and equitable vaccine strategies, leading to a more sustainable and efficient approach to vaccination in the country.

This mixed-method study aimed to analyze the factors influencing the future of human vaccine policy using Cross Impact Analysis. Firstly, a scoping review was conducted to identify the factors affecting the future of human vaccine development. Secondly, a semi-structured interview was conducted with experts in this field to add more factors and confirm the identified factors within the Iranian context. Finally, a Cross-Impact Analysis (CIA) approach was applied to comprehend the complex relationships between the identified factors. Thematic analysis was used for the qualitative data, and MICMAC analysis was applied to characterize the relationships between the factors.

Seventeen key driving force factors were identified through comprehensive review and interviews. These factors were assigned weighted values ranging from zero to three and subsequently analyzed using MICMAC software. Employing the Cross-Impact Analysis (CIA) technique, the study characterized the impact of each factor on vaccine policy and elucidated the intricate interactions between them. The findings underscored that robust leadership and governance, an innovative ecosystem, and well-established immunization information systems emerged as pivotal driving forces shaping vaccine policy in Iran.

While this study contributes valuable insights into the driving factors influencing vaccine policy in Iran, it is important to acknowledge several limitations. The results rely on the subjective perceptions of a diverse group of specialists, and future research could delve into additional factors in other countries to identify common themes and differences.

This study provides evidence to assist policymakers in making informed decisions regarding vaccines in Iran. The findings suggest that enhancing access to vaccines, fostering trust in the healthcare system, and prioritizing equity in distribution can contribute to increased vaccination rates and a reduction in vaccine-preventable diseases.

This study provides a unique contribution to the field of vaccine policy by utilizing the cross-impact analysis to examine the complex interactions among various factors. The results of this analysis demonstrate that these interactions can significantly impact the overall system, highlighting the need for policymakers to consider multiple factors when formulating effective strategies. By revealing the significance of these interactions, this research offers valuable insights into the development of successful policies that can shape a desirable future for vaccine policy in Iran. Future studies could ratify the findings from this research by applying other methodological approaches.

The COVID-19 pandemic was unprecedented and has disproportionately affected the lives and livelihoods of people worldwide. Many governments restricted social and economic activities to curb the virus, and with the availability of the COVID-19 vaccine, many see it as providing hope to return to normalcy. Within such a context, China, Russia, and the United States (USA) have leveraged their vaccine diplomacy to gain and expand their influence. Vaccine diplomacy could help major powers cement their influence well beyond the pandemic if successfully deployed. By examining the vaccine diplomacy race in Southeast Asia, this chapter reveals the factors that motivate major powers to engage in the race and the strategies used. This chapter also assesses China’s vaccine diplomacy in Malaysia and how it has contributed to cementing a stronger bilateral relationship between Malaysia and China that would probably outlast the pandemic.

Seasonal influenza epidemics accounted for significant morbidity and mortality loads worldwide despite the availability of a safe vaccine as an efficient tool against severity of the disease. However, the uptake of the latter was sub-optimal. This study aims to identify predictors and barriers related to seasonal influenza vaccine uptake in the Kingdom of Bahrain.

A cross-sectional study enrolled 502 individuals attending primary healthcare centers in Bahrain for ambulatory care between July and August 2022. The data were collected using an interviews-based questionnaire which included questions on demographic data, knowledge and attitudes and practices toward influenza vaccine. The authors identified the barriers as well as the determinants of the vaccine uptake and its recommendation to others.

The mean age of participants was 35.07 years (SD = 13.9). Most of the respondents were Bahraini (86.5%) and 53.4 % were females. The results revealed that 34.1% have previous information about the influenza vaccine and 36.9% versus 69.9% are willing to receive the vaccine or advice it to others, respectively. Determinants of vaccine uptake were identified.

This study confirmed a sub-optimal influenza vaccine acceptance in the general community of Bahrain despite a global access in primary care. Health professionals need to be more proactive in mobilizing the community and particularly females toward influenza vaccination.

Across the United States (US), COVID-19 vaccination coverage was lower in rural counties compared to urban counties, exacerbating rural health inequities. While rural communities fall short of the public health goal to vaccinate all who are eligible, most rural residents have chosen to vaccinate for COVID-19. The aim of this study was to better understand rural New Mexicans' attitudes and beliefs about COVID-19 vaccines.

We conducted and analyzed 51 in-depth, semi-structured interviews with adults living in rural New Mexican counties, covering a range of topics related to the pandemic, including vaccines. These interviews were conducted in the Summer of 2021 after the vaccines were widely available to all adults over the age of 18 and youth between the ages of 12–17, but not yet available for children under 12 years.

Two major perspectives were identified: (1) the idea that COVID-19 vaccinations are a tool that individuals can use to achieve freedom and protection and (2) the view which regarded vaccines as an infringement of personal rights and one's autonomy of health. For people who viewed the vaccine as a tool for freedom, several themes emerged, including (1) a preference for vaccine manufacturers, specifically a preference for Pfizer, and (2) frustrations related to vaccine access, specifically, older adults expressed frustrations with the difficulty of scheduling vaccination appointments. However, most participants felt as though they had enough vaccination resources. For people who viewed vaccines (and vaccine mandates) as limiting their freedom, additional themes emerged: (1) overarching distrust of government and the perception that vaccines were an extension of government and (2) distrust in the vaccines themselves, including a perceived lack of research on the vaccines and a perception that the vaccine was developed in too short of a period. Some of the people who hold these beliefs are also vaccinated. We draw from social psychology theories to better understand how people who hold a rural identity come to establish different beliefs and practices compared to larger metropolitan regions. While political identity is a contributor, of our participants, the group who were most likely to report not being vaccinated were the “independent” or “unaffiliated voters.” Our findings can help craft culturally responsive vaccine initiatives for rural communities.

Vaccine hesitancy is a long-standing issue among both the general population and health communicators. This study aims to ascertain the inclination and the reasons for vaccine hesitancy by conducting content analysis and sentiment analysis of the perspectives expressed in comments on videos related to vaccine hesitancy uploaded from India on YouTube.

The assessment of the sentiments of the vaccine-hesitant population is done using Valence Aware Dictionary and sEntiment Reasoner sentiment analysis module implemented with Python’s NLTK library to automatically determine the sentiments of the comments. Manual content analysis was performed on 60.09% viewer comments randomly selected from the total comments in 238 videos on vaccine hesitancy originated from India and labelled each comment with labels “Anti”, “Pro”, “Confused”, “Not Applicable” and “Unrelated” labels.

The study found “Mistrust-Government policies”, “Fear-health related consequences”, “Mistrust-Scientific research”, “Vaccine effectiveness and efficacy” and “Misinformation/myths” as the top five determinants for vaccine hesitancy, whereas “Religious beliefs”, “Fear-Economic consequences”, “Side Effects- short-term” and “Fear-mode of administration” found to be the lesser cited reasons for vaccine hesitancy. However, the study also investigates changes in the inclination of Indian commenters towards vaccine hesitancy and revolving issues over time.

Public health policymakers and health communicators may find the study useful in determining vaccine hesitancy factors in India.

The originality of this study lies in its approach. To date, no sentiment analysis has been conducted on the content released on YouTube by Indian content creators regarding pro- and anti-vaccination videos. This inquiry seeks to fill this research gap.

The increasing prevalence of a wide range of infectious diseases, as well as the underwhelming results of vaccination rates that may be traced back to problems with vaccine procurement and distribution, have brought to the fore the importance of vaccine supply chain (VSC) management in recent years. VSC is the cornerstone of effective vaccination; hence, it is crucial to enhance its performance, particularly in low- and middle-income countries where immunization rates are not satisfactory.

In this paper, the authors focus on VSC performance improvement of India by proposing supply contracts under demand uncertainty. The authors propose three contracts – wholesale price (WSP), cost sharing (CS) and incentive mechanism (IM) for the government-operated immunization program of India.

The authors' findings indicate that IM is capable of coordinating the supply chain, whereas the other two contracts are inefficient for the government. To validate the model, it is applied to a real-world scenario of coronavirus disease 2019 (COVID-19) in India, and the findings show that an IM contract improves the overall efficiency of the system by 23.72%.

Previous studies focused mainly on the influenza VSC industry within developed nations. Nonetheless, there exists a dearth of literature pertaining to the examination of supply contracts and their feasibility for immunization programs that are administered by the government and aimed at optimizing societal benefits. The authors' findings can be beneficial to the immunization program of India to optimize their VSC cost.

The COVID-19 pandemic disproportionately impacted Latinos across the United States though data on emerging immigrant communities is lacking. The purpose of this study is to better understand how Latino immigrants were impacted by the COVID-19 pandemic, allowing a community health clinic in Charlotte, North Carolina to quickly respond to their needs.

A mixed method, rapid appraisal using community-based participatory research approaches conducted in February to April 2021 by a team of bilingual researchers. Project consisted of a Spanish, electronic survey distributed through community leaders and in-person interviews conducted in Spanish at COVID-19 vaccine clinics. SPSS Version 26 was used for quantitative analysis. Ordinal and binary logistic regression tests were performed to assess the associations among several outcome and four predictor variables: documentation status, status of health insurance, level of trust in the vaccine and place of birth. Qualitative analysis used rapid appraisal and grounded theory approaches.

Latino immigrants experienced job and income loss, resulting in difficulty paying for food, housing and health care. Participants experienced emotional and financial stress and isolation from family. Undocumented immigrants were more likely to experience detrimental impacts than documented immigrants. Most wanted the vaccine but felt barriers like trust and insurance may prevent them.

Findings from this study are locally relevant to Latino immigrants living in the Charlotte area of North Carolina and findings may not be generalizable to other Latinos. Participants were recruited through faith networks and those who are not connected may not be represented. In addition, interview participants were sampled during vaccination clinics and likely had positive views of the vaccine.

As a direct result of this project, community health clinic (CHC) held vaccination clinics to instill more confidence in the vaccination process. Spanish-speaking staff were available to assist with paperwork and answer questions onsite. The importance of familismo in decision-making and the reported presence of misinformation about the vaccine prompted CHC to continue providing accurate information about the vaccine in Spanish, and to strategize marketing materials to reflect a family-centric approach to better appeal to Latinos. Findings were used to obtain funding for expansion of clinical and behavioral health services in the community through mobile units, increasing accessibility for Latino immigrants.

To the best of the authors’ knowledge, this was the first study to examine the effects of the pandemic on a growing and disproportionately underrepresented group in an emerging immigrant state. Findings informed culturally competent COVID-19 vaccine clinics, marketing strategies and the expansion of medical and behavioral health services for a local community clinic.

This study aims to examine individual behaviours regarding coronavirus disease-2019 vaccine brands.

Firstly, qualitative research identified the reasons for vaccine hesitancy in relation to specific brands using data gathered from 36 semi-structured interviews and processed with Leximancer software. Secondly, a new conceptual model was developed with data from 917 questionnaires and analysed using partial least squares-structural equation modelling. The model integrates health treatment effectiveness, vaccines’ immediate health benefits and individuals’ hope as antecedents of perceived vaccine brand reliability and company reputation and their relationships with choice uncertainty.

The results reveal that vaccine hesitancy can be linked with individual, group and contextual and vaccine brand influences and that brand reliability and company reputation antecedents have variable but statistically significant effects on choice uncertainty.

This research’s contribution lies in its analyses of vaccine acceptance and uncertainty from a vaccine brand perspective. The results can guide brand management policies implemented by public and private organisations.

This study contributes to academic literature by filling in two gaps. The first was that no prior studies have directly addressed vaccine brands’ impact, whereas the second gap was the need for brand management policies that public (e.g. governments and public health agencies) and private organisations (e.g. pharmaceutical laboratories) can apply.

The onset of the coronavirus disease 2019 (COVID-19) has led to loss of lives and jobs and other adverse effects on persons, families and businesses. With its frightening tendencies, it was a sigh of relief with the discovery of vaccines to mitigate its disastrous effects. However, participation in the vaccination exercise in Ghana has been slow and unencoraging. This paper sought to identify the factors that influence the perception and willingness of individuals to receive the COVID-19 vaccine.

For this study, structured questionnaires were administered to 1,350 respondents selected at random by way of purposive sampling from specific regions that were also randomly selected. Out of this sample, a total of 1,296 were found to be in useable form. The probit model estimation with marginal effects was used to determine both perception and willingness to take the COVID-19 vaccine.

The authors observed that increases in age and manufacturing sector workers were positively associated with vaccine perception, while both males and females residing in the Bono and Central regions had negative perceptions toward the vaccine. Among male workers, education and living in Accra had a negative relationship with vaccine perception, while for female workers, education had a positive influence on vaccine perception. Additionally, workers in the transport sector and those residing in urban areas were more inclined to receive the COVID-19 vaccine in Ghana, regardless of gender. Again, the authors observed that larger household size, people with no formal education and females with primary education were more willing. Also, increase in age for males reduced willingness, while residents in the greater Accra region were less willing to take the vaccine.

To the best of the authors' belief and knowledge, the observations and recommendations made are consistent with theory and empirical studies and contribute immensely to the discussions about the most effective ways of combating the COVID-19 pandemic. It also offers a nuanced perspective on how policy-makers can enact policies that ensure efficient and effective ways of dealing with future epidemics.