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The California Department of Public Health announced that most California residents are now eligible for an updated Moderna or Pfizer-BioNTech booster shot.
These boosters are bivalent, which means they are pulling double duty by increasing immunity against the original coronavirus strain while also protecting against the newer omicron variants, according to the statement released Saturday.
The updated bivalent boosters will now replace the existing monovalent booster vaccines — the Moderna bivalent booster for individuals 18 years of age and older and the Pfizer-BioNTech bivalent booster for individuals 12 years of age and older. Children ages 5-11 can still boost their immunity with the monovalent boosters currently available.
The state is prepared to begin offering the updated boosters to Californians as supplies arrive over the next few days.
The CDPH encourages individuals to check with their medical care provider or local clinic for an updated booster appointment, or to book through vaccines.gov. Appointments will also become available through myturn.ca.gov within weeks.
Federal review of new booster
The U.S. Food and Drug Administration authorized a pair of COVID-19 booster vaccines Wednesday that are specifically formulated to target the omicron variant of the virus and two of its most common subvariants.
The FDA amended its emergency use authorizations for the Moderna and Pfizer vaccines to allow for the omicron-specific booster, which targets the BA.4 and BA.5 subvariants while still protecting against the original COVID virus strain as well.
The Moderna booster will be available to adults while the Pfizer booster will be available to people ages 12 and older.
"As we head into fall and begin to spend more time indoors, we strongly encourage anyone who is eligible to consider receiving a booster dose with a bivalent COVID-19 vaccine to provide better protection against currently circulating variants," FDA Commissioner Dr. Robert Califf said in a statement.
The U.S. Centers for Disease Control and Prevention is expected to also give its approval in the next week of the omicron-specific boosters, allowing their rollout by Labor Day.
According to the FDA, the new booster vaccines will be used for all future booster vaccinations and the original mRNA vaccines will only be authorized for an initial vaccine series going forward.
People will be eligible for one dose of the omicron-specific boosters if it has been at least two months since completing their initial vaccination series.
"The FDA has extensive experience with strain changes for annual influenza vaccines. We are confident in the evidence supporting these authorizations," said Dr. Peter Marks, director of the FDA's Center for Biologics Evaluation and Research. "The public can be assured that a great deal of care has been taken by the FDA to ensure that these bivalent COVID-19 vaccines meet our rigorous safety, effectiveness and manufacturing quality standards for emergency use authorization."
Alameda County pauses boosters until new omicron-targeting doses arrive
Some Bay Area counties temporarily paused COVID-19 booster vaccinations Thursday in anticipation of the arrival of new vaccines targeting strains of the virus' omicron variant.
Alameda, Marin, San Mateo, Santa Clara and Sonoma counties all paused their booster vaccination efforts, electing to resume them later this month when shipments of the omicron-specific vaccines begin to arrive.
The decision comes one day after the U.S. Food and Drug Administration updated its emergency authorizations of the Moderna and Pfizer vaccines to allow for the omicron-specific booster, which targets the BA.4 and BA.5 subvariants while still protecting against the original COVID virus strain as well.
The new vaccines, which are only approved as boosters, are likely to become available as soon as next week, pending the expected approval of the U.S. Centers for Disease Control.
However, under the FDA's authorization, the new vaccines will be used for all future booster vaccinations of people ages 12 and up while the original mRNA vaccines targeting only the original COVID strain will be authorized for initial vaccine series as well as boosters for children between 6 months and 11 years old.
Sonoma County Health Officer Dr. Sundari Mase said the pause of booster vaccinations will ensure that county residents get the most up-to-date vaccine formula available.
"I urge anyone who is eligible to get the new boosters once they are available," Mase said. "This is our best tool to keep the community safe through the fall and winter."
The new Moderna booster will be available to adults while the new Pfizer booster will be available to people ages 12 and older.
Booster vaccinations are expected to proceed in Contra Costa County, according to a county spokesman, while San Mateo County plans to resume administering boosters the week of Sept. 12. Alameda County expects to begin administering the new boosters as soon as the end of next week.
"We are working to make sure residents have access to the new booster shots when they become available and to reopen clinics as soon as possible," said Lizelle Lirio de Luna, the director of San Mateo County Health's Family Health Services Division.
People will be eligible for one dose of the omicron-specific boosters if it has been at least two months since completing their initial vaccination series.
Vaccination appointments can be scheduled statewide at https://myturn.ca.gov.
