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Volume 27, Number 11—November 2021
Dispatch

Effectiveness of BNT162b2 Vaccine in Adolescents during Outbreak of SARS-CoV-2 Delta Variant Infection, Israel, 2021

Aharona Glatman-FreedmanComments to Author , Yael Hershkovitz, Zalman Kaufman, Rita Dichtiar, Lital Keinan-Boker, and Michal Bromberg
Author affiliations: The Israel Center for Disease Control, Ramat Gan, Israel (A. Glatman-Freedman, Y. Hershkovitz, Z. Kaufman, R. Dichtiar, L. Keinan-Boker, M. Bromberg); Tel Aviv University, Tel Aviv, Israel (A. Glatman-Freedman, M. Bromberg); Haifa University, Haifa, Israel (L. Keinan-Boker)

Main Article

Table

Effectiveness of BNT162B2 vaccine against PCR-confirmed SARS-CoV-2 infection in adolescents 12–15 years of age after receipt of second dose, Israel, 2021*

Period Days after second dose Unvaccinated,
SARS-CoV-2–positive, no.
Unvaccinated person-days Vaccinated,
SARS-CoV-2–positive, no.
Vaccinated
person-days
Crude vaccine effectiveness
(95% CI)
Adjusted vaccine effectiveness
(95% CI)
Week 1 1–7 1,825 10,148,829 53 673,129 55.3 (41.3–66.0) NA
Week 2 8–14 2,923 9,750,816 26 672,790 87.1 (81.0–91.2) NA
Week 3 15–21 4,906 9,386,429 31 672,624 91.2 (87.4–93.8) NA
Week 4 22–28 7,510 8,905,457 67 672,328 88.2 (85.0–90.7) NA
Weeks 2–4 8–28 8,144 13,623,714 124 2,034,591 89.8 (87.8–91.5) 91.5 (88.2–93.9)

*BNT162B2 vaccine, Pfizer-BioNTech (https://www.pfizer.com) NA, not applicable; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.

Main Article

Page created: September 23, 2021
Page updated: October 19, 2021
Page reviewed: October 19, 2021
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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