Sao Paulo, the country's industrial hub and hardest-hit state, extended its stay-at-home Wednesday until June 15, though Governor Joao Doria announced a gradual reopening of "some activities" would be allowed from June 1.
Bolsonaro has meanwhile pinned his hopes on the medication hydroxychloroquine, which -- like US President Donald Trump -- he has touted as a potential wonder drug against Covid-19.
Brazil's health ministry recommends doctors in the public health system prescribe hydroxychloroquine or a related drug, chloroquine, from the onset of Covid-19 symptoms.
His predecessor quit, reportedly because he disagreed with Bolsonaro on hydroxychloroquine. And the president fired the previous health minister, also after clashing over how to respond to the pandemic.
Meanwhile, hospitals are dangerously close to the breaking point in the hardest-hit areas, and the outbreak is not expected to peak in Brazil until next month.
"We are particularly concerned that the number of new cases reported last week in Brazil was the highest for a seven-day period since the outbreak began," Carissa Etienne, director of the Washington-based Pan American Health Organisation, said Tuesday.