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# Companies Say Pfizer Covid Booster Effective in Young Kids
- URL: https://www.fdaweb.com/companies-say-pfizer-covid-booster-effective-in-young-kids/
- Published: 2022-05-23T12:00:00.000Z
- Updated: 2026-09-14T17:45:43.000Z
- Author: David McFarland
- Tags: Biologics, #legacy-id-D5151871

Pfizer and BioNTech say three doses of their Covid-19 vaccine had a strong immune response, high efficacy, and favorable safety in children 6 months to under age 5\. “Our Covid-19 vaccine has been studied in thousands of children and adolescents and we are pleased that our formulation for the youngest children, which we carefully selected to be one-tenth of the dose strength for adults, was well-tolerated and produced a strong immune response,” [says](https://www.pfizer.com/news/press-release/press-release-detail/pfizer-biontech-covid-19-vaccine-demonstrates-strong-immune?ref=fdaweb.com) Pfizer CEO **Albert Bourla**. “These topline safety, immunogenicity, and efficacy data are encouraging and we look forward to soon completing our submissions to regulators globally with the hope of making this vaccine available to younger children as quickly as possible, subject to regulatory authorization.”