2.2.1. Vaccine-specific questionnaire
A vaccine-specific questionnaire was designed by a panel of
psychologists and clinicians to access the perceptions and attitudes of
the Brazilian adult population about vaccination for COVID-19, and to
identify which factors are associated with vaccine hesitancy and lack of
confidence in vaccines. To do so, vaccine hesitancy was defined and
construed according to the definitions set forth by the SAGE Working
Group on Vaccine Hesitancy, which defines vaccine hesitancy as the delay
in acceptance or refusal of vaccination despite availability of
vaccination services. 4 To this end, vaccine
acceptance was assessed by the responses to the question: ”If you have
not yet received a dose of the COVID-19 vaccine, do you plan to get
vaccinated?” with the answer options “yes”, “no” and “not sure”.
Responses ”no” and ”not sure” were coded into one variable to indicate
refusal of vaccination. Moreover, the full questionnaire consisted of
three main sections, including questions on (1) contextual, (2)
individual and group, and (3) vaccine/vaccination-specific influences on
COVID-19 vaccination.