In our continuing series looking at the latest medical research and news on COVID-19, Larry Mantle speaks with Dr. Peter Chin-Hong, infectious disease specialist and professor of medicine at the UCSF Medical Center.

Topics today include:

• Biden says U.S. will have enough vaccine doses to vaccinate all adults by the end of May

• C.D.C. says small, maskless gatherings of vaccinated people will soon be allowed

• How CA virus numbers compare to TX as the latter lifts its mask mandate and opens up 100 percent

• COVID-19 vaccine rates in Brentwood, Santa Monica twice as high as poorer L.A. County areas

• How much of an impact does the state tier system have on the disparity in vaccine rates

• COVID side effect enlarged lymph nodes can be mistaken for cancer

• Night clinics for single moms in Black communities who can only get vaccinated at night & other ways that providers, governments are trying to reach people where they are

• Brazilian virus variant infected people who already had COVID-19

• Let’s do the numbers -- the vaccine efficacy numbers, that is, and explore what they really mean

• CalMatters: When might nursing homes reopen for visitors?

• Blue Shield officially takes over COVID distribution for California

Guest:

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