Nightly Check-In: Students Back To Quarantining Right After Schools Reopen

81 students and 15 staff members are back to quarantining tonight, just two days after some schools in Escondido reopened. It’s raising the debate about whether schools can really reopen safely. Plus, researchers are now looking into whether mixing COVID vaccines is safe. NBC 7’s Mark Mullen has the Nightly Check-In for Thursday, February 4th.