The 65-year-old Portuguese underwent tests on Monday with members of the coaching staff, players and the club officials and his result turned out to be “a weak positive or inconclusive.”
The club’s first team and youth team squad’s training have been suspended for a week as a result.
"Clube de Regatas do Flamengo informs that the tests to detect the presence of Covid-19 in athletes, coaching staff and employees of the football department were concluded this Monday afternoon (16). The club reports that coach Jorge Jesus performed a first test for Covid-19 and the result was a weak or inconclusive positive. The result is being checked.
"The coach is under the care of Flamengo's medical department and is presently stable. The board reiterates its commitment to health and safety during the Coronavirus pandemic and has suspended all training for the first team and youth teams for at least a week.
"Athletes, members of the football department and coaching staff tested negative for Covid-19. It is worth mentioning that the football department will follow the guidelines of the Ministry of Health during the Coronavirus pandemic."
Jesus was appointed as Flamengo manager in June last year and led the team to the Brazilian league title as well as the Copa Libertadores.
The former Benfica manager was also in charge when Flamengo made it to the final of the FIFA Club World Cup last year, losing to Liverpool.
"It's true that my test came up positive and it's also true that I feel normal," the Portuguese coach said on Instagram.
"I feel exactly the same today as I felt a month, a year, two, three years ago. I have no symptoms but the test was positive."
"I am going to stay under quarantine. I think that in a week or two, God willing, I'll be back to normal."