Michael Strahan has tested positive for COVID-19 ... TMZ has learned.
Sources connected to the "Good Morning America" host and NFL Hall of Famer tell us he is currently quarantining ... which is why he's been absent from 'GMA' all week.
Football fans also noticed he only appeared remotely for his other gig on FOX NFL Sunday during the NFC Championship -- that's because Michael was already taking precautions.
We're told he found out on Saturday he'd been exposed at some point last week, and immediately started quarantining.