In our continuing series looking at the latest medical research and news on COVID-19, Larry Mantle speaks with Dr. Peter Chin-Hong from UCSF. 

Topics today include:

• COVID-related MIS-C illness strikes more California children 

• The coronavirus is mutating. What does that mean for us? 

• Mutated coronavirus strain is driving South Africa's spike 

• Canada the latest country to halt travel from UK over new COVID-19 variant concerns 

• People over 75, essential workers next for vaccines 

• L.A. County outlines wrenching moves to ration healthcare if COVID-19 hospital crisis worsens 

Guest:

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