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From KQED Public Radio in San Francisco, I'm Nina Kim. Coming up on forum, COVID-19 is not done with us yet, writes the L.A. Times editorial board yesterday, as Los Angeles County reports more than 3,000 new cases in the last few days.

99% of them are among the unvaccinated, according to the county health department, and they've been fueled by the highly infectious Delta variant.

As Californians try to make sense of sometimes contradictory messages around what precautions

to take in public, masking when schools reopen, and the protection offered by vaccines,

two experts join us to take your questions right after this news.

This is Forum. I'm Mina Kim. This hour, we try to make sense of the latest news on vaccines.

Also, the states and CDC's masking guidance as schools prepare to reopen next month,

and other issues likely bubbling up for you as we contend with the highly transmissible Delta variant, which has taken hold in the U.S. and fueled surging case numbers in some pockets of

California. Joining me is Dr. Paul Offutt, Professor of Pediatrics of the University of Pennsylvania

School of Medicine, Director of the Vaccine Education Center at the Children's Hospital of Philadelphia.

Thanks for joining us, Dr. Offutt. Thank you. Also with us is Dr. Grace Lee, Professor of Pediatrics

and Infectious Diseases at Stanford, Children's Health and Stanford University School of Medicine,

also a member of the U.S. Advisory Committee on Immunization Practices.

...