Register for COVID-19 Vaccine
HCPH is now providing Moderna bivalent boosters for children ages 6 months to 5 years old and Pfizer bivalent third primary series doses for children ages 6 months to 4 years old who have not yet completed their Pfizer primary series.

Please call 832-927-8787 or walk-up to any HCPH COVID-19 vaccination site if interested.

If you need help determining when you should get your COVID-19 booster dose, consult your primary care provider or use the CDC's booster scheduling tool. 


Register for COVID-19 Vaccine

Harris County Public Health's COVID-19 vaccination sites serve walk-ups without appointments. However, appointments are encouraged for quicker service.


Provider Name
Public Phone Number
Public Registration or Website
Harris County Public Health
832-927-8787
Click Here*
Houston Health Department
832-393-4220
Click Here


*This registration app is not compatible with Internet Explorer. Please use a different browser. When you have registered, please allow 15 - 30 minutes for the confirmation email and text message to arrive.

Vaccine Availability and Eligibility 

Following state guidance, Harris County has opened vaccine eligibility to all residents ages 6 months and older. Per the FDA's emergency use authorizations:

  • Moderna COVID-19 vaccine for ages 6 months and older
  • Pfizer COVID-19 vaccine for ages 6 months and older
  • Novavax COVID-19 vaccine, adjuvanted for ages 12 years and older


How Do I Register?

HCPH is now offering COVID-19 vaccine appointments on demand. 
 
Schedule online by clicking here or by calling 832-927-8787. You will be able to choose between available days and times, locations, and vaccines.

HCPH Vaccine Registration Guidance:
Helping Older Adults Register for HCPH's COVID Vaccine
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HCPH COVID-19 Vaccinations for Ages 5 - 17
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Local 5 - 17 Year Old Vaccine Provider List
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Vaccination Drive-Thru Information
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What to Expect At A Vaccine Distribution Unit (VDU)
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Step 1: What You Need to Know

All COVID-19 vaccines provided by HCPH are free of charge. In most situations, Pfizer, Moderna, and Novavax COVID-19 vaccines are preferred over the Johnson & Johnson COVID-19 vaccine due to the risk of rare, but serious adverse events following administration of the J&J vaccine.

  • The Moderna vaccine can be provided to individuals 6 months and older. Moderna is administered as a 2-dose primary series for most people or a 3-dose primary series for people who are moderately or severely immunocompromised.
  • The Pfizer vaccine can be provided to individuals 6 months and older. Pfizer is administered as a 2-dose primary series for most people or a 3-dose primary series for people who are moderately or severely immunocompromised and children ages 6 months through 4 years old. Children ages 6 months through 4 years who have not yet completed their Pfizer primary series will receive a Pfizer bivalent vaccine as their third primary dose.
  • The Novavax adjuvanted vaccine can be provided to individuals 12 years and older. Novavax is administered as a 2-dose primary series.
Step 2: Making an Appointment with HCPH
  • Click on the Register Now link to go to HCPH's COVID-19 vaccine scheduling app. 
  • Follow the instructions on the app to register. 
  • Once your appointment is scheduled, you will receive a confirmation email or text message that will include your QR code. You must bring your QR code with you to the scheduled appointment.
Step 3: Receiving Your Vaccine
  • When arriving at an HCPH vaccination site, make sure to bring your QR code if you have a scheduled appointment. (Print out or on your phone)
  • If you did not schedule an appointment, please follow the signage and work with HCPH site staff to help you register. 
  • Be prepared to wait 15-30 minutes after your vaccination to ensure you do not experience any adverse effects. HCPH has trained site staff to assist residents who feel they need medical care. 

If you do not have transportation for your vaccination appointment, please contact the HCPH Vaccine Hotline at 832-927-8787.

Step 4: Scheduling Your Second Dose

Residents are encouraged to plan for their next dose. Individuals can sign up and schedule instantly.  Learn more here about staying up to date with COVID-19 vaccine and boosters.

Upon completion of your scheduled dose, you will receive a notification through text and/or email to schedule your next dose closer to the date of your next appointment. If there is no appointment availability, please continue to check the link daily for open appointments until you can sign up.

Step 5: Schedule Your Booster Dose

COVID-19 vaccine boosters can further enhance or restore protection that might have decreased over time after your primary series vaccination. Learn more about staying up to date with your COVID-19 vaccines here.

The CDC has developed an online COVID-19 vaccine booster tool to help you find out when to schedule a booster dose. 

CDC recommends all eligible individuals aged 6 months and older get an updated COVID-19 booster to help restore protection that has decreased since their last vaccine and provides improved protection against newer variants. Updated booster doses, also known as bivalent boosters, target the most recent Omicron subvariants, BA.4 and BA.5, in addition to the original SARS-CoV-2. 

The Novavax booster is a monovalent booster and is only recommended in situations when an individual would not receive a booster dose otherwise due to an allergy or preference. 

Please note the steps outlined above are for Harris County Public Health vaccination sites only. Steps for other providers may differ.



About COVID-19 Vaccines

Several COVID-19 vaccines have been authorized for emergency use by the U.S. Food and Drug Administration (FDA). Learn more below. 

  • Pfizer-BioNTech COVID-19 vaccine: This vaccine is approved by the FDA and authorized for emergency use in individuals 6 months and older. Pfizer vaccination is administered as a 2-dose primary series for most people or a 3-dose primary series for people who are moderately or severely immunocompromised. and children ages 6 months through 4 years old. Children ages 6 months through 4 years who have not yet completed their Pfizer primary series will receive a Pfizer bivalent vaccine as their third primary dose. Clinical trial data show that the vaccine is 95 percent effective in preventing mild, moderate, or severe COVID-19. Individuals will not be considered fully vaccinated until two weeks after the final dose in the primary series.

  • Moderna COVID-19 vaccine: This mRNA vaccine is approved by the FDA and authorized for emergency use in individuals 6 months and older. Moderna vaccination is administered as a 2-dose primary series for most people or a 3-dose primary series for people who are moderately or severely immunocompromised. Children ages 6 months through 5 years who previously completed a Moderna primary series are eligible to receive a Moderna bivalent booster 2 months after their final primary series dose. Clinical trial data show the vaccine is about 94 percent effective in preventing mild, moderate, or severe COVID-19. Individuals will not be considered fully vaccinated until two weeks after the final dose in the primary series.  

  • Johnson & Johnson (Janssen) COVID-19 vaccine (Not Available Through HCPH): This vaccine is a viral vector vaccine authorized for emergency use in individuals 18 years of age and older for whom other FDA-authorized or approved COVID-19 vaccines are not accessible or clinically appropriate, and individuals 18 years of age and older who elect to receive the Johnson & Johnson COVID-19 Vaccine because they would otherwise not receive a COVID-19 vaccine. This vaccine can cause blood clots with low levels of platelets (blood cells that help your body stop bleeding), which may be fatal. This vaccine can be administered as a single dose primary vaccination, a single booster dose after completing a primary vaccination with the Johnson & Johnson COVID-19 Vaccine, or a single booster dose after completing primary vaccination with a different authorized or approved COVID-19 vaccine. Clinical trial data show that this vaccine is about 72 percent effective in preventing mild and moderate COVID-19 infections and 85 percent effective at preventing severe disease. Clinical trial data show that the vaccine was about 67% effective in preventing mild, moderate, or severe COVID-19. Individuals will not be considered fully vaccinated until two weeks after the final dose in the primary series. 

  • Novavax COVID-19 vaccine, Adjuvanted: This vaccine is a protein-based vaccine authorized for emergency use in  individuals 12 years of age and older as a 2-dose primary series given three weeks apart. This vaccine contains the SARS-CoV-2 spike protein and an adjuvant. Adjuvants are incorporated into some vaccines to enhance the immune response of the vaccinated individual. Novavax is not authorized for use as a booster dose at this time. Clinical trial data show that the vaccine was about 90 percent effective in preventing mild, moderate, or severe COVID-19. Individuals will not be considered fully vaccinated until  two weeks after the final dose in the primary series.


Registration FAQ


How do I register without access to Internet or a computer?

If you or a loved one do not have access to the Internet or a computer, please use the phone number listed above to schedule your appointment or visit one of HCPH's vaccines sites for walk-up registration.

Can I receive my 2nd dose at HCPH if I got my 1st dose from another provider?

If you received your first dose of COVID-19 vaccine at another provider, you can still receive your second, additional, or booster dose at a vaccine site operated by Harris County Public Health (HCPH). To schedule your appointment, please call the HCPH Vaccine Hotline at 832-927-8787 or register online.

What do I do about my appointment if I do not have access to a personal vehicle?

Residents who do not have access to a personal vehicle may still receive vaccines at HCPH vaccination sites. Please call the health department (i.e., Harris County Public Health, Houston Health Department) you registered with for alternative arrangements. For appointments with Harris County Public Health, call the HCPH Vaccine Hotline at 832-927-8787.

What COVID-19 vaccine should I get?

All of the vaccines being offered by Harris County are safe and effective at protecting people from getting seriously ill, being hospitalized, and even dying—especially when boosted. You can choose which COVID-19 vaccine to get depending on your age and preference. 

For adults ages 18 years and older, the mRNA COVID-19 vaccines (Pfizer-BioNTech or Moderna) and protein-based COVID-19 vaccine (Novavax) are preferred over Johnson & Johnson’s Janssen COVID-19 vaccine. The primary difference between these vaccines is that the Pfizer, Moderna, and Novavax vaccines require two shots whereas the Johnson & Johnson vaccine can be administered in one shot. Maximize protection and get all recommended vaccine doses and boosters as soon as possible.

Currently, the Pfizer & Moderna COVID-19 vaccines are the only COVID-19 vaccines available to children 6 months to 11 years old.

I lost my vaccine card. Can HCPH help me get a replacement?
Yes! If you lost your vaccine card and need a replacement one, call 832-927-8787. Our call center will help find your vaccination records and provide residents with a replacement card.


Other Providers

If you were unable to schedule vaccination with Harris County Public Health (HCPH), we recommend the resources below for other COVID-19 vaccine providers in the area.



Additional Resources

For more information about COVID-19 vaccinations, please visit the CDC website.