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COVID-19 Status Update for 01/20/2023

Marin County COVID-19 Status Update for January 20, 2023, includes: Marin’s Current COVID Status; COVID-sniffing Dogs Protect Older Residents; Local Virus Levels Moving in Right Direction; and updated local COVID-19 data.

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Boosters and Additional Doses


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The updated booster shot is now available for everyone 12 and older. This updated booster will increase immunity against the original COVID-19 strain. It also protects against new Omicron variants. Learn more about boosters below.

Marin County Public Health is strongly recommending the new booster for anyone age 50 and older who have not received a booster in 2022, or have not experienced a COVID-19 infection in the past 9 months.

Ready to receive a booster dose? Click the button below to find your nearest vaccine site.


The new Omicron boosters (also known as "bivalent boosters") are available at the following locations:
Costco Pharmacy
CVS Pharmacy (select locations in Marin)
Pharmaca (Novato | Mill Valley)
RiteAid Pharmacy
Safeway Pharmacy
Walgreens Pharmacy
⚠️ Plan ahead! Make an appointment today! 

Who can get a booster?

Updated booster shot

The updated booster (also known as "omicron booster" or "bivalent booster") will increase immunity against the original COVID-19 strain. It also protects against new Omicron variants.

Everyone 12+ who has had their primary series should get the updated booster at least 2 months after any COVID vaccine or booster dose. Your booster shot can be a different vaccine brand than you got in your original series.


Initial booster shot

The initial booster shot is available for children ages 5-11 who completed the primary series of the Pfizer vaccine.

You must have gotten your primary series vaccine at least 4 months ago. See if you’re eligible.


Additional doses

Additional doses of Pfizer or Moderna are available for those with weak immune systems. 

This includes people who:

  • Get active cancer treatment for tumors or cancers of the blood
  • Got an organ transplant and are taking medicine to suppress the immune system
  • Got a stem cell transplant within the last 2 years or are taking medicine to suppress the immune system
  • Have moderate or severe immune deficiency (such as DiGeorge syndrome, Wiskott-Aldrich syndrome)
  • Have advanced or untreated HIV infection
  • Are taking high-dose corticosteroids or other drugs that suppress the immune response

Children aged 5-11 with these conditions can get an additional dose of Pfizer or Moderna.

Talk to your doctor to see if getting an additional dose is right for you.



Can I get a booster dose from a different manufacturer than my original vaccine?


Yes, state and federal vaccine regulatory agencies have approved use of the vaccines as a “mix and match” booster option. This means your single booster dose could be a different brand than your original vaccine series. Eligibility and booster dose timing is based on the brand of your original vaccine series. For example,

  • If you originally received Johnson & Johnson, you may receive a Pfizer, Moderna, or Johnson & Johnson booster vaccine two months after your original dose.
  • If you originally received Moderna or Pfizer and you meet eligibility for a booster, you may receive a Pfizer, Moderna or Johnson & Johnson booster vaccine two months after completing your original vaccine series. 


What is the Difference Between a 3rd (additional) dose and a Booster?




Where can I access a booster or additional dose?

Start with your health care provider. Your doctor will know whether you will benefit from a booster shot or additional dose. Providers who offer regular vaccinations (e.g., flu, pneumovax, shingles) should provide eligible patients with COVID-19 booster vaccines as capacity allows.

Most vaccine providers in Marin County are providing vaccines to people who are eligible. Vaccine providers include:

  • Healthcare Providers (your personal doctor or physician)
  • Medical Clinics
  • Marin County Public Health pop-up vaccine sites
  • Retail Pharmacies


More Information and Frequently Asked Questions

Stay up-to-date with the latest information about booster and third doses by following the latest information on the California Department of Public Health (CDPH) and CDC websites, and Marin County Public Health (MCPH) COVID-19 Booster FAQs .