3. Results
From 1st to 30th June 2021, data were collected from a nationally representative sample of the Brazilian adult population (N=1700). There were no invalid responses. Sociodemographic and health characteristics of the study population are shown in Table 1. Respondents were mostly females (67.9%), within the age range of 30 and 59 years. About three-fourths of them had professional training (74.9%), reported a very good to excellent self-perceived health status (73.8%) and had no personal history of previous infection by COVID-19 (83.3%) nor among their household familiars (76.4%).