coronavirus May 7, 2020 6:37 am Stanford Doctor Discusses Response to National Daily Health Survey Stanford is conducting a daily health survey to pinpoint coronavirus hotspots. Dr. Lawrence “Rusty” Hofmann talks to Marcus Washington about the public’s response. US & World Videos 2:19 San Francisco barbershop struggles to stay open after pandemic 0:51 Alameda County using dogs to detect COVID 3:57 Interview: Doctor's perspective on COVID 4 years after shutdown started 2:27 Marking 4 years since COVID-19 shut down the Bay Area 2:09 CDC updates COVID isolation guidelines