Nightly Check-In: Local Doctor's Answer for Reaching Herd Immunity

Lines at vaccination sites are dwindling down across San Diego County. Now, the challenge is getting the rest of the county to get vaccinated to reach herd immunity. Tonight we’ll hear one local doctor’s solution. Plus, a 17-year-old singer receives a full ride to a prestigious conservatory. NBC 7’s Mark Mullen has the Nightly Check-In for Wednesday, April 28th.