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This Week in San Mateo County Health
Week of January 30, 2023

County Pop-Up Clinics

Federal funding for hosting community-based clinics will no longer be available after January 2023. San Mateo County Health has reallocated some local funding to continue to support some hyper-targeted community clinics that are school and faith-based through the end of March 2023.

To request a pop-up vaccine clinic specifically at a school or faith-based site please complete the online request form.

Testing Update

Most State-sponsored Test-to-Treat sites in San Mateo County will cease operations on February 5, 2023. Testing sites in San Bruno (Bay PLS Labs, 841 San Bruno Ave. W, Suite 100) and San Mateo (College of San Mateo, 3401 CSM Drive) will remain open past February 5. Additional COVID-19 testing and Test-to-Treat resources continue to be available through health care providers and pharmacies.

Preventing Respiratory Infections

With COVID-19, RSV and flu circulating in our area, take steps to prevent these respiratory infections by wearing a high-quality mask indoors, staying up to date on vaccinations, washing your hands, avoiding touching your face, covering coughs, and cleaning surfaces. See County Health’s guidance for these three diseases here.

Updated, Bivalent Boosters

San Mateo County Health offers updated, bivalent boosters, which are effective against both the original strain of the virus and the Omicron variants, at its community clinics. Advance appointments are available on MyTurn, though appointments are not required.

Updated boosters are also available from primary health care providers, such as Kaiser and Sutter, as well as from pharmacies such as Walgreens, CVS, and others.

Eligibility for Updated Boosters

  • Moderna Bivalent Booster is authorized and recommended for those 6 years and older.
  • Pfizer Bivalent Booster is authorized and recommended for those 5 years and older.
  • People cannot get a bivalent booster without first completing at least a primary series. 
  • The bivalent booster recommendation replaces previous booster recommendations.


  • Boosters should be administered at least 2 months after completion of the primary series or the most recent booster dose of the original COVID-19 vaccine.