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COVID-19 Vaccines
Updated on 04/15/22
CDC expands eligibility for COVID-19 boosters
The Centers for Disease Control and Prevention (CDC) has updated its guidance as follows:
- People over the age of 50 who received their first booster at least 4 months ago may now receive a second booster dose (Moderna or Pfizer/BioNTech).
- Immunocompromised people who received their first booster dose at least 4 months ago may now receive a second booster dose as well.
- Those 18 and over can receive either of the mRNA vaccines (Moderna or Pfizer/BioNTech) as a second booster
- Those age 12-17 are limited to Pfizer/BioNTech as their second booster
- Adults who received the Johnson & Johnson/Janssen vaccine for both their primary vaccine and also their booster dose (at least four months ago) may also receive a second booster dose using an mRNA (Moderna or Pfizer/BioNTech) COVID-19 vaccine
If you are eligible, you can book an appointment for a second booster via MyHealth now.
Stay up to date with all recommended COVID-19 vaccinations and boosters.
Everyone age 5 and older is eligible for a COVID-19 vaccine.
Everyone age 12 and older, who completed an initial vaccine series, is eligible for a booster.*
Parents/Guardians of people under age 18 without proxy MyHealth access will need to call to schedule an appointment. Individuals who are aged 5-17 can also schedule their vaccination with Stanford Children’s Health. Parental consent is required if under 18 years old.
*Pfizer-BioNTech booster is available for 12+
*Moderna booster is available for 18+
Phone scheduling is available Monday to Friday, 8:00 a.m. - 5:00 p.m.
Eligible individuals can be vaccinated at the locations below. Parental consent is required if under 18 years old.
Hours & locations updated on 04/15/22
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Facts and Resources
The best protection against COVID-19
If you’re fully vaccinated and boosted, you have the best chance of staying healthy. You also minimize your chances of becoming seriously ill with COVID-19 and hospitalization.
If you’ve been ill with COVID-19, you still need vaccinations and boosters
A case of COVID-19 does not make you immune to further infections with variants of the virus. Get all your recommended vaccinations and boosters.
Learn more about vaccines and additional doses
Read about vaccine timing and recommendations for immunocompromised people at CDC.gov: Stay Up to Date with Your Vaccines.
How to protect your family and close circle when not everyone is vaccinated
Explore the CDC’s recommendations at CDC.gov: Families and COVID-19.
How to talk to people who have concerns about getting vaccinated or boosted
Download our guidance:
The Centers for Disease Control & Prevention (CDC) recommends COVID-19 booster shots to certain groups of people based on their age, health condition or occupation, and also to anyone who received the Johnson & Johnson/Janssen COVID-19 vaccine at least two months ago.
Boosters can be scheduled for:
- Individuals 12+ who received a Pfizer-BioNTech vaccine at least five months after their second dose
- Individuals 18+ who received a Moderna COVID-19 vaccine at least five months after their second dose
- Individuals 18+ who received the Johnson & Johnson/Janssen COVID-19 vaccine at least two months ago
- Individuals who are immunocompromised should schedule a booster dose 28 days after completing the number of recommended primary doses
**Individuals aged 12-17 can only receive the Pfizer-BioNTech booster. Individuals aged 18 and older may choose which vaccine they receive as a booster dose.
**Individuals with recent COVID-19 infection may receive their booster dose after their symptoms resolve and they have met criteria to discontinue isolation per CDC guidelines.
Please refer to this CDC chart of information about all three COVID-19 boosters.
The Centers for Disease Control and Prevention (CDC) issued guidelines on February 11, 2022 for immunocompromised people. Those who fall in this category and who've had the mRNA vaccines (Pfizer/BioNTech or Moderna) should get a fourth shot (booster dose) at least three months after completing the three-dose primary series. For those who've had the Johnson & Johnson/Janssen vaccine, an mRNA dose is recommended at least 28 days after the first shot, followed by a third dose at least two months later. Learn more about the CDC guidance »
Immunocompromised people who received their first booster dose at least 4 months ago may now receive a second booster dose as well:
- Those 18 and over can receive either of the mRNA vaccines (Moderna or Pfizer/BioNTech) as a second booster
- Those age 12-17 are limited to Pfizer/BioNTech as their second booster
Stanford Health Care patients who are eligible for additional doses can schedule their appointments through MyHealth now.
Individuals with recent COVID-19 infection may receive their booster dose after their symptoms resolve and they have met criteria to discontinue isolation per CDC guidelines.
- Individuals aged 12-17 can only receive the Pfizer-BioNTech booster.
- Individuals aged 18 and older may choose which vaccine they receive as a booster dose.
Recommendations by the Centers for Disease Control and Prevention now allow for mix-and-match dosing for booster shots.
Please refer to this CDC chart of information about all three COVID-19 boosters.
You can book an appointment for the vaccine at one of our vaccination clinic sites by calling 650-498-9000 or via MyHealth.
“Additional doses” are different than a “booster dose.” A booster is an added dose of a vaccine that is given to someone with a healthy immune system who built enough protection after being fully vaccinated. If that protection gradually decreases, a booster can help sustain it. Third or fourth doses are provided to individuals with compromised immune systems for whom the original vaccine dose was not sufficient to achieve protection from the virus. For more information on new CDC guidance on COVID-19 vaccine additional doses for immunocompromised people, click here.
Yes, the COVID-19 vaccine and flu vaccine may be given at the same time.
Early data suggest that the COVID-19 vaccines are highly likely to provide antibody protection against the Omicron variant, especially for individuals who have received a booster dose in addition to primary vaccination.
Although “breakthrough” infections of the Omicron variant are expected in vaccinated individuals, experts are cautiously optimistic that these will result in much less severe illness, due to the protection from the COVID-19 vaccine. People who are unvaccinated continue to be at much higher risk of infection and severe outcomes from infection with ANY strain of SARS-CoV2, another reason vaccination and booster shots are encouraged for all eligible individuals.
At this time, it appears unlikely that a new vaccine will be required for Omicron. Nevertheless, Pfizer-BioNTech and Moderna report that they have begun developing an Omicron-specific vaccine, should the Omicron variant prove to require one.
Stanford Medicine has access to all 3 vaccine manufacturers and can help you obtain J&J if necessary. Please discuss this with your healthcare provider to determine if you should receive a J&J dose.
Vaccination for ages 5-11
Children aged 5-11 will receive a smaller dose of the Pfizer/BioNTech vaccine, using smaller needles. The dose for these children is 10 micrograms, one-third of that used in teens and adults. Children’s immune systems are more responsive than those of adults and in clinical trials, the smaller dose was found to produce a robust immune response.
Children will receive two doses of the Pfizer-BioNTech vaccine spaced three weeks apart, the same timing as for older age groups.
Vaccine trials for children younger than 5, using even smaller doses, are ongoing.
For more information on the pediatric COVID-19 vaccine, read our Pediatric Vaccine FAQs.
For more information on booster doses for immunocompromised patients age 5+, view the CDC guidance.
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Scheduling Tip
After signing in, navigate to the Appointments tab. Once there, select "COVID-19 Vaccination" from the list of specialties.
MyHealth is also available on your iOS and Android mobile devices.
Thank you for your patience as we work together to keep our community safe.
Everyone age 5 and older is eligible for a COVID-19 vaccine.
Everyone age 12 and older, who completed an initial vaccine series, is eligible for a booster.**
Parents/Guardians of people under age 18 without proxy MyHealth access will need to call to schedule an appointment. Individuals who are aged 5-17 can also schedule their vaccination with Stanford Children’s Health. Parental consent is required if under 18 years old.
**Pfizer-BioNTech booster is available for 12+
**Moderna booster is available for 18+