In our continuing series looking at the latest medical research and news on COVID-19, we speak with UCSF’s Dr. Peter Chin-Hong. 

Today’s topics include:

• California workplace mask rules could ease for the vaccinated 

• San Francisco is nearing coronavirus herd immunity, but L.A. still has months to go 

• Pandemic shows risk of obesity, and challenge of weight loss 

• US deaths from heart disease and diabetes climbed amid COVID-19 

• Celebrations (and questions) greet US vaccine donation plan 

• He flew to India to see his parents sick with COVID-19. Now, this Arizona man is unable to get back to his pregnant wife 

Guest:

Peter Chin-Hong, M.D., infectious disease specialist and professor of medicine at the UCSF Medical Center; he tweets @PCH_SF