Starting later this week, if you received the one-shot Johnson & Johnson vaccine, you're eligible to drop into the vaccination clinic at SF General and get a "supplemental" mRNA vaccine dose — but don't call it a booster.

The Delta variant is likely causing more severe infections, even though experts have not been saying this up until now, and the ease with which it spreads even among the vaccinated has the CDC raising internal alarms.

Bay Area health officers likely don't want to order any more restrictions that will impact recovering businesses, but the pressure seems to be on to make a mask recommendation more of a mandate.

The CDC reversed course Monday, citing new data, and said it now recommends indoor masks for the vaccinated in all areas of the country where COVID infections are surging.

There has been a lot of talk, both amongst friends and in the media, in the last two weeks as panic spreads about the Delta variant, mask guidance, and the possibility of yet another lockdown. But infectious disease experts are not the ones sounding alarm bells.