Allegations of pandemic mismanagement that emerged in the first weeks of the investigation have done much to damage the president's reputation, but it is still too early to understand whether Bolsonaro will actually appear weak. "It's not the sprinter who does his sprint but then loses power".
The vaccination drive began in mid-January with AstraZeneca and CoronaVac jabs.
Brazil has registered 500,800 deaths from 17,883,750 confirmed COVID-19 cases on Saturday. They were promoted by left-wing opposition parties who have been heartened by Bolsonaro's declining poll ratings with next year's presidential race looming.
In Sao Paulo, protesters dropped red balloons as a tribute to the victims of the virus Bolsonaro's supporters have taken more often to the streets over the past month, in large part because many agree with his dismissal of restrictions meant to stifle the coronavirus and anger that lockdown measures have hurt businesses.
In downtown Rio de Janeiro, protesters waved signs adorned with slogans such as "500,000 deaths, it's his fault".
A girl points at a mural featuring the face of Brazilian President Jair Bolsonaro during a protest against his handling of the Covid-19 pandemic along Paulista Avenue, in Sao Paulo, Brazil, on Saturday.
"His position on Covid and his denialism are absurd".
Former left-wing President Luiz Inácio Lula da Silva said, "In a country that is a world leader in vaccination, 500,000 people have died from the diseases now being vaccinated. There is a word for that: genocide", leftist former president Luiz Inacio Lula da Silva tweeted. I tweeted. "Solidarity with the Brazilian people".
It was all the more surprising, then, that Brazil agreed at the 11th hour to host the Copa America football tournament, seeing global stars such as Argentina's Lionel Messi, Luis Suarez of Uruguay and the hosts' own Neymar arrive from their European clubs.
A health worker treats a COVID-19 patient inside an ICU at the Sao Bento Public Hospital in Abaetetuba, Brazil, on April 23, 2021.
Although the match is held in a closed room, Bolsonaro was accused of giving his blessing to host the tournament in the midst of a pandemic in which both Argentina and Colombia had to withdraw. However, some epidemiologists saying the real death number is significantly higher - perhaps hundreds of thousands higher.
"We really need to increase vaccination very quickly", she said.
However, Bolsonaro has shown no signs of changing tack, and last week he announced that he would ask the Minister of Health to lift the requirement to wear a mask outdoors.