Following his third positive test, taken on Tuesday, the office in Brasilia issued a statement saying the head of state was nevertheless "in good condition."
"President Jair Bolsonaro continues to be in good condition, accompanied by the presidency's medical team. The test taken by the president yesterday, (July) 21, resulted positive," said the statement.
On July 7, Bolsonaro announced he tested positive for the coronavirus after presenting a fever and malaise, and he has been working from his residence ever since, attending no public events.
He tested positive again last week.