Bivalent COVID-19 booster protection profile in keeping with monovalent vaccine

Protection findings for the bivalent COVID-19 booster vaccine are very similar to the ones from the monovalent vaccine in kids elderly 5 to 11 years, in line with the Facilities for Illness Keep watch over and Prevention (CDC).

The bivalent vaccination was once given Emergency Use Authorization in kids elderly 5 to 11 years by way of the United States Meals and Drug Management (FDA) on October 12, 2022. On December 8, 2022, this was once prolonged to kids elderly 6 months and older.

From October 12, 2022, to January 1, 2023, 861,251 kids elderly 5 to 11 years gained a bivalent Pfizer booster, and 92,108 kids elderly 6 to 11 years gained a bivalent Moderna booster.

The CDC established a surveillance gadget to look at opposed reactions to the bivalent vaccine. This contains v-safe, a smartphone surveillance gadget, and the Vaccine Hostile Tournament Reporting Device (VAERS), a passive vaccine protection surveillance gadget co-managed by way of the CDC and FDA.

About 69% of youngsters who gained a bivalent vaccine reported native reactions, and about 50% reported systemic reactions. Of those, 99.8% of reactions reported to VAERS weren’t serious. Reported reactions had been consistent with the ones reported from monovalent vaccinations. Myocarditis and dying weren’t reported in any circumstances.

For v-safe information, native reactions had been reported by way of about 66% of youngsters who gained their booster from Pfizer, and about 77% of youngsters who gained their booster from Moderna. Systemic reactions had been reported by way of about 46% of youngsters who gained a Pfizer booster and about 62% of youngsters who gained a Moderna booster.

The commonest opposed reactions reported had been injection web page ache in about 66% of sufferers, fatigue in 33%, and headache in about 23%. Maximum reactions had been gentle and most commonly gave the impression within the day following vaccination, with the superiority of reactions lowering within the following days.

About 14% of youngsters may just now not attend faculty a minimum of 1 day within the week after vaccination, about 14% couldn’t entire day-to-day actions, and about 2% had oldsters or caregivers search clinical handle their kids. Hospital treatment was once maximum commonplace at an outpatient medical institution, and no case required clinic care.

Vaccination mistakes had been the commonest match reported to VAERS, making up about 84% of news. Those incorporated mistaken dose administered, mistaken product formula administered, product preparation factor, and product administered to a affected person of an beside the point age.

Of over 950,000 doses of the bivalent booster vaccine given to kids elderly 5 to 11 years, simplest 2 studies had been made to VAERS of great opposed reactions. Those findings are in keeping with the ones of the monovalent booster, and the Advisory Committee on Immunization Practices recommends kids elderly 6 months and older obtain a bivalent booster vaccine if to be had.


Hause AM, Marquez P, Zhang B, Su JR, Myers TR, Gee J, et al. Protection Tracking of Bivalent COVID-19 mRNA Vaccine Booster Doses Amongst Youngsters Elderly 5–11 Years — United States, October 12–January 1, 2023. MMWR Morb Mortal Wkly Rep. 2023;72:39–43. doi:10.15585/mmwr.mm7202a5

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