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Public Health Status Update for 12/08/2023

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COVID-19 Status Update for 12/29/2021

Marin County COVID-19 Status Update for December 29, 2021 includes Marin COVID-19 Update: Omicron & Policy Changes; Marin Aligns with State on Face Covering Guidelines; 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.  


Marin COVID-19 Update: Omicron and Policy Changes 

Marin County Public Health Officer Dr. Matt Willis shares a brief update regarding the increased COVID-19 case rates in our county due to the presence of Omicron, a shift in local masking policy, plus new guidance regarding isolation and quarantine.  



Marin Aligns with State on Face Covering Guidelines 

With COVID-19 case rates rising rapidly, Marin County Public Health is aligning with the California Department of Public Health (CDPH) and requiring the wearing of face coverings in all indoor public places to stem the virus’ spread. 

Effective at 12:01 a.m. Thursday, December 30, previous local face covering exemptions carved out for indoor spaces with consistent cohorts of fully vaccinated people will no longer apply. Now, all people in Marin County, regardless of vaccination status, will be required to wear a mask in all indoor public settings, in accordance with the state-wide mandate. This includes gyms, fitness centers, office settings, employee commuter vehicles, religious gatherings, college classes, and similar settings. 

The first case of Omicron variant in Marin was identified on December 17. Since then, average daily COVID-19 case counts have tripled, fueled by the highly contagious Omicron variant. On December 28, 338 new cases were reported, exceeding the prior highest daily case count by more than 100 cases. 

“When we see numbers like this, it’s time to respond,” said Dr. Matt Willis, Marin County Public Health Officer. “The mask exemption for certain settings was a pre-Omicron policy. This variant behaves differently, and the risk of infection in a room full of vaccinated people who are unmasked is much higher now.” 

Continue reading the news release 


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 


+ 426 

“Active Cases” (Confirmed in Past 14 Days) 


+ 376 

Total Cumulative Deaths 


+ 0  

Current COVID-19 Hospitalizations 

+ 3 

Current COVID-19 ICU Patient Census 


+ 0  


COVID-19 Vaccination Data 

Today’s Report 

Change from Last Status Update 

Marin residents age 5+ vaccinated with at least one dose 

244,197 *** 

+ 0*** 

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


+ 0.0%  

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


+ 0.0% *** 

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

88% * 

+ 0%  

* Note that this percentage is out of all Marin residents including children younger than 5. 

** As population estimates may not be precise, as of December 13, 2021, the proportion of residents age 5+ vaccinated with at least one dose will be displayed up to, but not higher than 98%. 

***Today’s vaccination data has been delayed. The numbers included today are from yesterday’s Status Update and will be updated tomorrow. 

State COVID-19 data: 

Today’s Report 

Change from Yesterday 

California Confirmed Cases 


+ 20,748 

California Deaths 


+ 71 


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        
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  • Tweet & share this update with your friends on Twitter!