Special notice: Memorial Hermann has been selected by the State of Texas to serve as a vaccine hub. We are working to finalize plans about the vaccine hub, which will include additional opportunities for those within the state’s Phases 1A and 1B to schedule a vaccine appointment with a focus on making the vaccine available to the hardest hit zip codes and demographics. We will be limited by vaccine supply. For additional information, please check back here, email questions to covidvaccine@memorialhermann.org or call (833) 772-2864.

We remain committed to making vaccination available to all who are currently eligible, and eventually to all patients and members of the community as soon as possible. Please check our website for up-to-date information on our vaccination distribution process and check back often. We appreciate your patience and understanding.

About Vaccines

The Pfizer and Moderna vaccines have current efficacy rates of 95 and 94 percent, respectively. This means that compared to the placebo group, the vaccine group was protected against the COVID-19 virus 94 to 95 percent of the time. These rates are unusually high for a vaccine.

It is a common misconception that vaccines prevent someone from contracting the virus. Vaccines train the body’s immune system to recognize and fight viruses and bacteria. When the body is exposed to a virus after being vaccinated against it, the body is immediately ready to fight the illness. Because the body is able to respond more quickly, you are less likely to experience symptoms of the illness, especially severe and life-threatening ones.

At this time, there is not enough data about the vaccines to know how long they will provide protection from COVID-19.

Yes. We all need to continue the 3 W’s – wearing a mask, watching your distance and washing your hands regularly – until we know how long the vaccine protects against the virus and we gain community control of COVID-19.

No. The vaccines developed by Pfizer and Moderna were created with mRNA technology, which uses a gene from the COVID-19 virus, while other vaccines in development use an inactive form of the virus. None of the vaccines currently being tested use a live version of the virus, so a person who receives any of these vaccines cannot contract COVID-19 from the vaccination.

Individuals will not get to choose which COVID-19 vaccine they receive. The vaccine we administer is determined by our current allocation from the State.

Side effects may vary depending on which vaccine you receive, but some recipients of the Pfizer and Moderna vaccines have reported fatigue, headache, muscle and joint pain, swollen lymph nodes and pain at the injection site, which is generally the upper arm. Before you receive your vaccine, specific information about your vaccine’s anticipated side effects will be provided to you.

This will depend on the vaccine. Both the Pfizer and Moderna vaccines require two doses to ensure full protection – an initial vaccination and a booster shot of the same brand of vaccine three or four weeks later, depending on the vaccine (Pfizer is 21 days later, while Moderna is 28 days later). Other COVID-19 vaccines are still in clinical trials; some of these may require only one dose.