The US has lagged behind other countries in testing for COVID-19. Dr. Chaz Langelier, UCSF Infectious Disease experts, talks about why we were late to start testing and the importance of widespread testing for a disease that spreads through asymptotic or pre-symptomatic individuals. He also talks about lower respiratory tract infections (LRTI), the leading cause of death due to infection. Currently, the cause of most LRTI remains unknown due to limitations of current tests. Series: "Mini Medical School for the Public" [Health and Medicine] [Show ID: 35931]