Despite rising COVID infections, BART lifts mask mandate Monday

The BA.5 variant of the SARS-CoV-2 coronavirus is surging at a time when BART has relaxed temporary masking requirements.

• Jul 17, 2022

San Mateo health officials say COVID transmission staying high amid new subvariants

COVID-19 transmission levels remain high in San Mateo County, local health officials said Tuesday, and are likely to remain at a sustained level in the coming weeks.

• Jul 12, 2022

COVID: Health experts weigh efficacy of vaccine against BA 2.75

To date, the most common subvariant in the Bay Area is BA.5, but BA 2.75 has arrived and it may be more contagious.

• Jul 11, 2022

New omicron subvariant could fuel new surge in COVID cases

UCSF infectious disease specialist Dr. Peter Chin Hong talks about new COVID variant and recent spike in California cases (7-11-2022)

• Jul 11, 2022

Bay Area hit by coronavirus variant that rapidly spreads, reinfects

The BA.4 and BA.5 Omicron subvariants are now the dominant strains of COVID-19 in the United States. They're the most transmissible subvariants to date, according to Dr. John Swartzberg, and infectious disease expert at UC Berkeley.

• Jul 7, 2022

Alameda County to require masks in most indoor settings as COVID cases spike

Health officials in Alameda County on Thursday announced they will reinstate a mask requirement for most indoor settings due to surging COVID cases.

• Jun 2, 2022