In our continuing series looking at the latest medical research and news on COVID-19, Larry Mantle speaks with Dr. Dean Blumberg, professor of medicine and chief of Pediatric Infectious Diseases at UC Davis Children’s Hospital. 

Topics today include: 

• Study suggests more than two-thirds of Omicron cases are reinfections. 
• “Stealth Omicron” sub variant found in Santa Clara County. 
• Public health officials say Omicron has passed the peak in L.A. County but.  transmission rate is still worrisome. 
• Fans attending Super Bowl at SoFi will get KN95 masks and will be urged to keep them on. 
• When should a vaccinated person who recovered from COVID-19 get boosted? It’s complicated. 
• New research hints at four factors that may increase chances of long COVID. 
• Omicron’s spread underscores the potential consequences of the global vaccine gap, experts say. 
• Op-Ed: China’s zero-COVID policy is a pandemic waiting to happen. 
• It’s too early to say whether CBD helps against COVID-19. 

This program is made possible in part by the Corporation for Public Broadcasting, a private corporation funded by the American people.