coronavirus April 17, 2020 4:33 pm Dr. Birx Explains the Different Types of Testing Dr. Deborah Birx explains the difference between the two types of testing that will happen with coronavirus as the United States begins a path toward reopening the country. 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
