People with government-issued coronavirus immunity cards can now go indoors to restaurants, theatres, cinemas, spas, gyms and other recreational venues.
Malawi and South Sudan have said in recent days they will destroy some of their doses.
"Due to the lack of consistent and reliable data, Anvisa's Board of directors unanimously decided not to recommend the exceptional importation of the Russian Sputnik V vaccine," the watchdog said on Monday.
The US will export as many as 60 million doses in the coming months, the White House said Monday.
The European Commission president has announced that 70% of the adult population in the EU will receive at least one vaccine dose by July.
The region has been disproportionately hit by the pandemic, accounting for nearly 30% of the world's COVID-19 deaths.
Authorities in the US and the EU have already started planning for such an eventuality.
The European Commission chief said the total doses EU countries will receive from Pfizer will now be 250 million in the second quarter of this year.
Pilot schemes will be launched at the beginning of that month with the aim to have the whole system up and running by June 21, says the European Commission.