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COVID-19 Status Update for 12/07/2021

Marin County COVID-19 Status Update for December 7, 2021 includes COVID-19 Recap to Marin County Board of Supervisors; Testing… Read More

COVID-19 Status Update for 11/17/2021

Marin County COVID-19 Status Update for November 17, 2021 includes Booster Eligibility Widens in Marin County; How mRNA Vaccines Work; and updated local COVID-19 data. 

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The Marin County COVID-19 Status Update is published weekdays and as needed to share important news and resources related to the COVID-19 pandemic and to keep the local economy running. We remain here for you.  


Booster Eligibility Widened in Marin County 

In California, booster shots are now available to people ages 18+ if it has been at least six months since their second dose of the Pfizer or Moderna vaccine or at least two months since their first dose of the J&J vaccine. 

Marin County Public Health strongly recommends that all eligible residents in higher risk groups– especially seniors age 65 and older and those with underlying medical conditions– receive a booster as soon as possible.  In Marin, 80 percent of residents who have been hospitalized with COVID-19 after being fully vaccinated are over age 65. 

A number of healthcare partners are providing booster vaccines, including medical offices, pharmacies, healthcare systems, and community-based organizations. Members of the public do not need to receive the booster from the same entity that provided their initial vaccine series. Newly eligible residents are encouraged to book a vaccine booster appointment at beginning tomorrow, November 18.   

Marin County Public Health has various COVID-19 vaccination clinics scheduled this week where booster shots are available. Due to heavy demand, appointments for these sites are required. Visit our Vaccine Finder page to receive more information.  


Why do we need booster shots? 

Like the flu vaccine, which is distributed each year, vaccines for COVID-19 may lose their potency over time. Studies have shown that the antibodies produced by COVID-19 vaccines begin to diminish which may reduce the shield of protection they provide against the virus. This is to be expected; so we must keep our defense against COVID-19 strong by receiving a booster dose after a certain length of time.  


How COVID-19 mRNA Vaccines Work 

Ever wondered how mRNA vaccines work? Watch the video created by The Vaccine Makers Project below to learn more.  




COVID-19 Data Update: 

Below is a summary of today’s data now available on Marin Data & Surveillance webpage. View the page for a broader range of data, plus interactive graphs for confirmed COVID-19 cases, hospitalizations and deaths. Data analysis is available by age range, gender, race, and city/town/geographic region. Questions about the data? See our Data FAQ or contact us

Looking for daily data trends? Our Marin Data & Surveillance webpage  uses Tableau dashboards to visualize the impact of COVID-19 in Marin County. Under each dashboard are links to datasets available on Marin County's Open Data Portal


COVID-19 Case Data 

Today’s Report 

Change from Yesterday 

Total Confirmed Cumulative Cases 



“Active Cases” (Confirmed in Past 14 Days) 



Total Cumulative Deaths 



Current COVID-19 Hospitalizations 



Current COVID-19 ICU Patient Census 




COVID-19 Vaccination Data  

Today’s Report 

Change from Last Status Update 

Marin residents age 5+ vaccinated with at least one dose 



Percent of Marin population age 5+ who have received at least one dose 


+ 0.3%  

Percent of Marin population age 5+ who have completed vaccine series. 


+ 0.1%  

Percent of entire Marin population that is “fully immunized” (14+ days post final dose)* 

82% * 

+ 0%  

* Note that this percentage is out of all Marin residents including children younger than 12. 

** As population estimates may not be precise, as of October 4, 2021, the proportion of residents vaccinated with at least one dose will be displayed up to, but not higher than 98%. 

***Eligibility has been expanded from those 12+ to include pediatrics (ages 5 to 11), resulting in a percentage decrease from November 4, 2021. 

State COVID-19 data: 

Today’s Report 

Change from Yesterday 

California Confirmed Cases 


+ 3,912 

California Deaths 


+ 128 


Other Local and State Data Dashboards:  

Stay Informed 

Follow the County of Marin on FacebookTwitterNextdoor or subscribe to our status updates. Visit for resources to stay connected on the issue.  

Helpful Links and Online Resources: 

Contact Us. We Are Here for You. 

Have questions?  Contact the CA COVID-19 Hotline seven days a week by dialing (833) 422-4255 for COVID-19 information and resources, or email us.  

Spread the Word 

How your friends and family can receive these updates: 

  • Text "MARIN COVID" to 468311 to receive text message notifications        
  • Subscribe online to receive email notifications 
  • Tweet & share this update with your friends on Twitter!