"From 17 June the 'open house' mode becomes available for vaccination with first doses of users over 55 years of age," says a note released by the team led by Vice Admiral Henrique Gouveia e Melo, who created this system to "ensure that all eligible people are able to access the vaccination process."

The task force also recalled that vaccination under this system requires users to "mandatorily" go to the vaccination centre where they are registered at the health centre, which normally corresponds to their area of residence.