In our continuing series looking at the latest medical research and news on COVID-19, Larry Mantle speaks with Dr. Kimberly Shriner from Huntington Hospital in Pasadena. 

Today’s topics include: 

• CA lifts regional stay-at-home orders 

• Biden to reinstate international travel restrictions

• Merck nixes COVID-19 vaccines trials after weak immune responses 

• Moderna: vaccine still effective against variants 

  • Moderna developing booster targeted at South Africa strain 

• LA County says more vaccine appointments available this week 

• Young Angelenos waiting in unofficial vaccine lines 

• AstraZeneca: vaccine shortfall in Europe 

• Study: rich countries will face financial burden if poor ones go unvaccinated 

• Should we be wearing better masks? 

Guest: 

Kimberly Shriner, M.D., infectious disease specialist at Huntington Hospital in Pasadena