The ex-Barcelona and Paris St Germain player was in Belo Horizonte, where he played for local side Atletico Mineiro, when he got his diagnosis.
“I arrived in BH (Belo Horizonte) yesterday, I took the COVID test, I tested positive, I am good, asymptomatic so far,” the two-time FIFA World Player of the year said on Instagram on Sunday.
The former AC Milan, Flamengo and Gremio player said he would remain in a hotel until his condition improved.
The charismatic forward spent a month in a Paraguayan jail with his brother and business manager earlier this year, accused of entering country with a fake passport.