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Keep your immunity strong with the most protective, updated COVID-19 booster, now eligible for everyone 5 years+.

Staying up-to-date on COVID-19 vaccines, including primary series and updated booster, protects against the worst outcomes of COVID-19 for many months following vaccination. The FDA authorized the updated booster after reviewing data showing the bivalent boosters improved protection against recently circulating variants.

Get your questions answered and book your appointment today. Check with your medical care provider or local clinic for an updated booster appointment, or see if appointments are available at

Vaccines for 5-17

It is recommended that everyone ages 5 and older get a COVID-19 vaccine, and a booster when eligible, to help protect against COVID-19. Vaccinating children can help protect family members who are at increased risk for getting sick if they are infected or are not yet eligible for vaccination. Vaccination can help keep kids in school and safely participate in group activities. The Pfizer-BioNTech vaccine has been authorized for children ages 5 – 15 and approved for teens 16 – 17. COVID-19 vaccine dosage varies by age on the day of vaccination.

  • Youth ages 12 years and older receive the same dose as adults

  • Children ages 5 through 11 receive a half dose.

    • The Pfizer-BioNTech vaccine for children contains the same active ingredients as the vaccine given to adults and youth 12+.

  • A second shot of the vaccine should be administered three weeks after the first dose.

The COVID-19 vaccine has been proven safe and effective for children based on data from clinical trials. All COVID-19 vaccines continue to be rigorously monitored.

  • People have rarely experienced severe health effects after COVID-19 vaccination.

  • Children may experience side effects like pain and swelling at the injection site, or headache, chills and fever. These symptoms should go away in a few days.

Individuals 12 and older who received their second dose of the Pfizer vaccine at least 5 months ago, or 18 and older who received the second dose of the Moderna vaccine at least five months ago, or the J&J vaccine two months ago, should get their booster dose. Booster doses are not yet recommended for children ages 5 – 11.

Completing Series

You are considered fully vaccinated when it has been two weeks since you completed your primary series of COVID-19 vaccines.


  • Ages 5+

  • 2 doses given at least 21 days apart

  • You are fully vaccinated 2 weeks after your final dose


  • Ages 18+

  • 2 doses given at least 28 days apart

  • You are fully vaccinated 2 weeks after your final dose


  • Ages 18 +

  • 1 dose

  • You are fully vaccinated 2 weeks after your dose

*CDPH recommends people consider receiving a mRNA vaccine (Pfizer or Moderna) over Johnson and Johnson.

Pregnancy and Fertility

In early August, the CDC recommended COVID-19 vaccine for people who are pregnant, breastfeeding, trying to get pregnant now, or might become pregnant in the future. There is currently no evidence that any vaccines, including COVID-19 vaccines, cause fertility problems. Pregnant and recently pregnant people are more likely to get severely ill with COVID-19 than non-pregnant people. According to the CDC, pregnant people with symptomatic COVID-19 have a 70 percent increased risk of death. Talk to your doctors if you still feel hesitant about getting vaccinated against COVID-19 to learn the medical and scientific facts.

Questions & Answers

Still have questions?

Everyone deserves answers.

Visit California’s COVID-19 Vaccines webpage or call the COVID-19 Hotline at (833) 422-4255.

Share resources for your community

Share more about COVID-19 vaccines and why they’re so important. Visit the Partner Toolkit page to find images and videos you can post on social media and use in communities across California.