Does Vaccine Confidence Mediate the Relationship between Vaccine Literacy and Influenza Vaccination? Exploring Determinants of Vaccination among Staff Members of Nursing Homes in Tuscany, Italy, during the COVID-19 Pandemic

Individual predictors of vaccine hesitancy in the Italian post COVID-19 pandemic era

A wide range of survey studies have explored vaccination hesitancy/resistance during the COVID-19 pandemic and provided evidence that this can be explained by several individual variables from the ideological, clinical, and socio-affective domain. However, evidence about which individual variables predict vaccine hesitancy in the post-pandemic state of COVID-19 is meager. We administered a battery of questionnaires to a group of 120 Italian participants with high and low scores on the adult vaccine hesitancy scale (aVHS) to investigate the predictive role of ideological (i.e. political orientation), clinical (i.e. anxiety, interoceptive accuracy), and socio-affective (i.e. alexithymia, disgust sensitivity/propensity, empathy) variables on vaccine hesitancy/resistance. This study provides evidence that lower interoceptive awareness and cognitive empathy are predictors of a greater hesitancy to get vaccinated in the post-pandemic COVID-19 state.

Perspectives in the Development of Tools to Assess Vaccine Literacy

Vaccine literacy (VL) is the ability to find, understand, and evaluate vaccination-related information to make appropriate decisions about immunization. The tools developed so far for its evaluation have produced consistent results. However, some dimensions may be underestimated due to the complexity of factors influencing VL. Moreover, the heterogeneity of methods used in studies employing these tools hinders a comprehensive understanding of its role even more. To overcome these limitations, a path has been sought to propose new instruments. This has necessitated updating earlier literature reviews on VL and related tools, exploring its relationship with vaccine hesitancy (VH), and examining associated variables like beliefs, attitudes, and behaviors towards immunization. Based on the current literature, and supported by the re-analysis of a dataset from an earlier study, we propose a theoretical framework to serve as the foundation for creating future assessment tools. These instruments should not only evaluate the psychological factors underlying the motivational aspect of VL, but also encompass knowledge and competencies. The positioning of VL in the framework at the intersection between sociodemographic antecedents and attitudes, leading to behaviors and outcomes, explains why and how VL can directly or indirectly influence vaccination decisions by countering VH and operating at personal, as well as at organizational and community levels.

COVID-19 vaccine uptake, conspiracy theories, and health literacy among Black individuals in Canada: Racial discrimination, confidence in health, and COVID-19 stress as mediators

Factors influencing vaccine uptake in Black individuals remain insufficiently documented. Understanding the role of COVID-19 related stress, conspiracy theories, health literacy, racial discrimination experiences, and confidence in health authorities can inform programs to increase vaccination coverage. We sought to analyze these factors and vaccine uptake among Black individuals in Canada. A representative sample of 2002 Black individuals from Ontario, Quebec, Alberta, Nova Scotia, New Brunswick, British Columbia, and Manitoba, aged 14 years or older completed questionnaires assessing vaccine uptake, health literacy, conspiracy theories, racial discrimination experiences, COVID-19-related stress, and confidence in health authorities. Mediation analyses were conducted to assess (1) the effect of health literacy on COVID-19 vaccination uptake through confidence and need, COVID-19 related traumatic stress, and racial discrimination, and (2) the effect of conspiracy beliefs on COVID-19 vaccination uptake through the same factors. Overall, 69.57% (95% confidence interval, 67.55%-71.59%) of the participants were vaccinated and 83.48% of them received two or more doses. Those aged 55 years and older were less likely to be vaccinated, as well as those residing in British Columbia and Manitoba. Mediation models showed that the association between health literacy and COVID-19 vaccine uptake was mediated by confidence in health authorities (B = 0.02, p < 0.001), COVID-19-related stress (B = -0.02, p < 0.001), and racial discrimination (B = -0.01, p = 0.032), but both direct and total effects were nonsignificant. Lastly, conspiracy beliefs were found to have a partial mediation effect through the same mediators (B = 0.02, p < 0.001, B = -0.02, p < 0.001, B = -0.01, p = 0.011, respectively). These findings highlight the need for targeted interventions to address vaccine hesitancy and inform approaches to improve access to vaccinations among Black communities.