Harris County Launches On Demand COVID-19 Vaccine Appointment System; 55,000 COVID-19 Vaccine Appointments Now Available for the Week of April 19

Friday, April 16, 2021

Harris County Public Health (HCPH) today announced that it has opened 55,000 COVID-19 vaccines for the week of April 19th. In response to vaccine supply starting to meet demand, residents who sign up for a vaccine from HCPH will now be given appointment options immediately after registering for a vaccine while supplies last. Individuals will be provided with a choice of date, time, and location to get vaccinated upon registering online at or via phone with the HCPH Vaccine Hotline.

To register, residents should visit, or call the HCPH Vaccine hotline at 832-927-8787 for assistance. The Texas Department of State Health Services (DSHS) also directed vaccine providers to prioritize people 80 years and older when scheduling appointments and accommodate anyone in that age group who presents for vaccination, whether or not they have an appointment.

The new registration system will continue to support Harris County’s commitment to providing vaccines efficiently, fairly and equitably by lowering barriers to registration and providing information in multiple languages online and via phone. The county will also continue to prioritize vaccines for vulnerable communities by offering vaccines at mobile sites in hard-hit zip codes, conducting targeted outreach, offering transportation for those who cannot drive to an appointment on their own, and partnering with community organizations to support vaccine distribution.  

The county is currently offering Moderna and Pfizer vaccines via several county sites, including the FEMA Community Vaccination Center at NRG Park. The Pfizer and Moderna vaccines both require two doses for full vaccine protection. Those who received a first dose of the Pfizer vaccine need to get a second dose three to six weeks later, and those who received a first dose of the Moderna vaccine need to get a second dose four to six weeks later.

The Johnson & Johnson’s Janssen COVID-19 Vaccine is not being administered at any HCPH site at this time, per the Centers for Disease Control and Prevention (CDC) and the Federal Drug Administration (FDA)’s recommendation to pause its use.

For the next week, Harris County will offer appointments at the following drive through locations in addition to other mobile vaccination sites:

Tuesday, April 20 - Friday, April 23

Legacy Stadium 

Open Wednesday - Saturday 8am – 5pm

Moderna Vaccine

1830 Katyland Drive, Katy, TX 77493

Stallworth Stadium

Open Wednesday & Thursday 8am – 5pm

Moderna Vaccine

2102 E. Archer Road, Baytown, TX 77521

Monday, April 19 - Sunday, April 25

NRG Park    

Open daily 8am – 5pm

Pfizer Vaccine

NRG Park Yellow Lot, Gate 16

9036 S. Main Street, Houston, TX 77054