- patients with immunocompromise due to underlying disease or immunosuppressive treatment - pregnant and breastfeeding people - being registered in the national health surveillance system for having suffered covid-19 (symptomatic or asymptomatic) or having a positive igg result in nucleocapsid elisa in the sample taken on "day 0" for people who had received sputnik-v or astrazeneca as the first dose - having had a severe allergic reaction (anaphylaxis) to any vaccine

- patients with immunocompromise due to underlying disease or immunosuppressive treatment - pregnant and breastfeeding people - being registered in the national health surveillance system for having suffered covid-19 (symptomatic or asymptomatic) or having a positive igg result in nucleocapsid elisa in the sample taken on "day 0" for people who had received sputnik-v or astrazeneca as the first dose - having had a severe allergic reaction (anaphylaxis) to any vaccine