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Public Health Status Update for 04/12/2024

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COVID-19 Status Update for 09/23/2021

Marin County COVID-19 Status Update for September 23, 2021 includes Mu Variant: Is There a Concern; Vaccination Opportunities in Marin; 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.  


Mu Variant: Is there a concern? 

You may have heard about the Mu variant in the news recently.  Right now, this variant is steadily decreasing and causing very few cases in the United States. In Marin, only three cases have been identified so far, all collected in early July 2021 and none since then. 

Are the three cases a cause for alarm? No. Marin Public Health expects sporadic detection of any variant present globally because of travel. What we watch for is trends that reflect local spread. Since there have been no cases since July, its reassuring that this specific variant has not obtained any kind of foothold.   

All new cases in Marin continue to be driven by the Delta variant. In fact, for the past 5 weeks, 100% of all samples collected in Marin County have been Delta variant. The great majority of new cases are among unvaccinated individuals. The rate among unvaccinated individuals is nearly 7 times the rate among the vaccinated. The good news is all three of the COVID-19 vaccines used in Marin County help protect against all known variants, including Mu and Delta. 

Related resources: 


Vaccination Opportunities in Marin 

There are numerous free COVID-19 vaccination opportunities in Marin County taking place throughout the week. Those who are eligible, but haven’t received a vaccine or completed a vaccination series yet, are advised to make a reservation online in advance. All clinics are available to residents who are 12 & older. We as a community have done a remarkable job at reducing the spread of COVID-19, thanks to those who have gotten fully vaccinated. We appreciate you doing your part.   

Here are the available clinics for the rest of the week:  

  • Thursday, September 23 – Dining Under the Lights, San Rafael 
  • Friday, September 24 – Nave Shopping Center, Novato   
  • Saturday, September 25 – Canal Alliance, San Rafael  
  • Sunday, September 26 – Vintage Oaks Shopping Center Plaza, Novato 

Visit our Vaccine Finder page to schedule an appointment page and to see more dates. Other options to receive your COVID-19 vaccine include: 

  • Local pharmacies like CVSWalgreensRiteAid, and others offer same-day vaccine appointments.   
  • Marin County Public Health has developed an online form for requesting a no-cost visit from the mobile vaccination team. This form was designed to make it even easier for all residents to be fully vaccinated. Its intended use is for:    
    • Businesses can request pop-up vaccination clinics at the workplace to vaccinate employees.    
    • Homebound individuals and their loved ones can request a visit to the home for vaccination.    
    • Hospitals and healthcare providers can make a home vaccination request on behalf of their patients.    
    • Long-term care facilities can request on-site mobile vaccination units for staff and residents. 


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 

14, 678 


“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 12+ vaccinated with at least one dose 


+ 31 

Percent of Marin population age 12+ who have received at least one dose 


+ 0.1%  

Percent of Marin population age 12+ who have completed vaccine series. 


+ 0.1%  

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

79% * 

+ 0%  

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


Residential Care & Skilled Nursing Facility COVID-19 data: 

Today’s Report 

Change from Yesterday 

Positive Patients at Facilities cumulative 


+ 0 

Positive Patients at Facilities current  


+ 0 

Positive Staff at Facilities current 

 + 0 

Facility Patient Deaths 


+ 0 

Facility Patient Deaths as percentage of all COVID+ deaths 


 - 0.4% 


State COVID-19 data: 

Today’s Report 

Change from Yesterday 

California Confirmed Cases 


+ 6,694 

California Deaths 


+ 154 


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.  

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!