Nightly Check-In: Mystery Coronavirus Case in California

A new case of coronavirus to our North could be the first patient-to-patient transmission in the U.S. Hear the growing concern for San Diegans. Plus, the discovery of a “mini-Moon” circling Earth. NBC 7’s Mark Mullen and Catherine Garcia have these stories and more in tonight’s Nightly Check-In for Thursday, February 27th, 2020.