coronavirus May 14, 2021 11:21 pm Scientists Call for Investigation Into COVID-19 Origin A group of top doctors around the country are calling for a deeper investigation into the cause of COVID-19. Whether it came from an animal or even if it came from a lab. Ian Cull reports. 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
