Vaccine Information

Click here for Vaccination locations.

Coconino County COVID-19 Information Line: 928-679-7300

CDC Recommends Additional COVID-19 Vaccine Dose for Certain Immunocompromised Individuals 

The Centers for Disease Control and Prevention (CDC) recommends that certain immunocompromised individuals who have already received an initial two doses of mRNA COVID-19 vaccine (Pfizer-BioNTech or Moderna) receive an additional dose.  

Emerging evidence shows some people who are moderately to severely immunocompromised experienced a reduced immune response to the initial COVID-19 vaccine series. The administration of an additional mRNA COVID-19 vaccine aims to prevent serious and possibly life-threatening COVID-19 within this population.  

Those with moderate to severe immune compromise due to a medical condition, or receipt of immunosuppressive medications or treatments are eligible for a third dose of the same type of vaccine they previously received. This includes people who have:  

  • Active treatment for solid tumor and hematologic malignancies.  
  • Receipt of a solid-organ transplant and taking immunosuppressive therapy.  
  • Receipt of CAR-T-cell or hematopoietic stem cell transplant (within 2 years of transplantation or taking immunosuppression therapy. 
  • Moderate or severe primary immunodeficiency (such as DiGeorge syndrome, Wiskott-Aldrich syndrome. 
  • Advanced or untreated HIV infection.  
  • Active treatment with high-dose corticosteroids (≥20mg prednisone or equivalent per day), alkylating agents, antimetabolites, transplant-related immunosuppressive drugs, cancer chemotherapeutic agents classified as severely immunosuppressive, tumor-necrosis (TNF) blockers, and other biologic agents that are immunosuppressive or immunomodulatory.  

People should talk to their healthcare provider about their medical condition, and whether getting an additional dose is appropriate for them.  The additional dose of an mRNA COVID-19 vaccine should be administered at least 28 days after a second dose of Pfizer-BioNTech COVID-19 vaccine or Moderna COVID-19 vaccine.   

The CDC does not recommend additional doses or booster shots for any other population at this time. 

Click here for information about where to receive a COVID-19 vaccination. 


For up-to-date information on the number of vaccines administered in Coconino County, please visit the Vaccine Data Dashboard.

Navajo Nation Information click here.

For state information, click here.

For a national overview, visit the CDC COVID-19 Data Tracker.


Visit ADHS at :


COVID-19 vaccination will help keep you from getting COVID-19

  • COVID-19 vaccines are authorized or approved only if they make it substantially less likely you’ll get COVID-19 and are safe.
  • Based on what we know about vaccines for other diseases, experts believe that getting a COVID-19 vaccine may help keep you from getting seriously ill even if you do get COVID-19.
  • Getting vaccinated yourself may also protect people around you, particularly people at increased risk for severe illness from COVID-19.
  • Experts continue to conduct more studies about the effect of COVID-19 vaccination on severity of illness from COVID-19, as well as its ability to keep people from spreading the virus that causes COVID-19.

COVID-19 vaccination will be a safer way to help build protection

  • COVID-19 illness can have serious, life-threatening complications, and there is no way to know how COVID-19 will affect you. And if you get sick, you could spread the disease to friends, family, and others around you.
  • Clinical trials of COVID-19 vaccines must first show they are safe and effective before any vaccine can be authorized or approved for use. The known and potential benefits of a COVID-19 vaccine must outweigh the known and potential risks of the vaccine for use under what is known as an Emergency Use Authorization (EUA). Watch a video on what an EUA is.
  • Getting COVID-19 may offer some natural protection, known as natural immunity. But experts don’t know how long this protection lasts, and the risk of severe illness and death from COVID-19 far outweighs any benefits of natural immunity. COVID-19 vaccination will help protect you by creating an antibody response without having to experience illness.

COVID-19 vaccination will be an important tool to help stop the pandemic

  • The COVID-19 vaccine will lead to a future where we don't need to wear masks because there will be underlying immunity in case of exposure. That day is not here yet and will not be until we reach a certain threshold of immunization and achieve herd immunity, therefore, people should continue to mask and social distance.
  • The combination of getting vaccinated and following CDC’s recommendations to protect yourself and others will offer the best protection from COVID-19.
  • Stopping a pandemic requires using all the tools we have available. 


Accurate vaccine information is vital. Learn the facts about it here.