In our continuing series looking at the latest medical research and news on COVID-19, we speak with Dr. Richard Riggs from Cedars-Sinai Medical Center. Today’s topics include: How has the PPE supply chain evolved? As case numbers go down, how is medical worker burn out? Biden announces deal for additional Johnson & Johnson vaccines Vaccines in the works to target multiple variants Study: UK variant has higher death rate Pfizer-BioNTech vaccine could neutralize Brazil variant How far is Calif. from a post-pandemic “normal?” Guest: Richard Riggs, M.D., senior vice president of medical affairs and chief medical officer at Cedars-Sinai Medical Center