Baylor College of Medicine

Additional COVID-19 Vaccine Dose

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Third Dose for Immunocompromised Individuals

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On Aug. 13, 2021, the CDC published recommendations that people who are moderately to severely immunocompromised should receive an additional third dose of mRNA COVID-19 vaccine 28 days after receiving the primary two dose series.

About 2.7 percent of Americans have a condition or receive treatment that meets this definition. More details can be found here: COVID-19 Vaccines for Immunocompromised People.

Please note the third dose is different than the booster dose.

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Frequently Asked Questions

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We know you have questions about the third dose of the COVID-19 vaccine, many of which are answered below. We will continue to update this page as new information becomes available.

Updates and FAQs are also available on separate pages for the booster shot and primary series of the COVID-19 vaccine

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About the Additional Dose

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Receiving the Third Dose at Baylor Medicine