Objectives Vaccine hesitancy is a multifaceted decision process that encompasses various factors for which an individual may choose to get vaccinated or not. We aimed to identify the relationship between COVID-19 conspiracy theories, general attitudes towards vaccines, current COVID-19 vaccine factors, and COVID-19 vaccine hesitancy. Methods The present research is a multi-province cross-sectional study design. Survey data were collected in May and June 2021 ( n =4905) in the Canadian provinces of Alberta, Ontario, and Quebec. Multivariate ordinal regression models were used to assess the association between vaccine hesitant profiles and COVID-19 conspiracy theories, general attitudes towards vaccines, and specific factors pertaining to COVID-19 vaccines. Results Participants were aged 18 to 40 years and 59% were women. Individuals with low income, with low educational attainment, and/or who are unemployed were more likely to be vaccine hesitant. COVID-19 conspiracy theory beliefs and general attitudes towards vaccines are significantly associated with greater hesitancy for the COVID-19 vaccine. Vaccine factors including pro-vaccine actions and opinions of friends and family and trust in scientists and government as well as the country in which a vaccine is manufactured are associated with less vaccine hesitancy. Conclusion Conspiracy theories are distinct from criticism and concerns regarding the vaccine. Nevertheless, poverty, low level of education, and distrust towards the government are associated with higher odds of being vaccine hesitant. Results suggest it is imperative to deliver transparent and nuanced health communications to address legitimate distrust towards political and scientific actors and address the societal gap regarding general attitudes towards vaccines as opposed to focusing solely on COVID-19. Supplementary Information The online version contains supplementary material available at 10.17269/s41997-022-00693-x.

The association of ideologically motivated violence with mental health disorders raises specific challenges for security agencies and clinical services. The aim of this paper is to describe the clientele of a specialized intervention program based in Montreal, Quebec, in terms of type of violent ideology and clinical presentation. We conducted a retrospective chart review of 156 individuals referred for violent extremism who received clinical services between 2016 and 2021. Univariate statistics were used to present a description of client sociodemographic and clinical characteristics. Roughly a third of clients referred for violent extremism presented non-ideologically based violence (32.6%), followed by 31.4% affiliated with far-right extremist ideology and over a quarter (25.6%) holding extremist views on gender. Over a third of these individuals had a stress-related (35.7%) and/or mood and anxiety disorder (36.9%), followed by 28% with an autism spectrum disorder diagnosis. The majority had some previous contact with mental health services. A significant number of clients displaying extremist discourses and/or actions needed psychiatric services but often failed to receive them because of the reluctance of clinicians to work with individuals perceived as high risk; in addition, individuals may be reluctant to engage in services perceived to be part of a socio-political system they reject. Specialized services are important as a means to provide mental health care to this group and also to develop knowledge and best practices for working with this clientele and provide consultation to mainstream mental health service providers.

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