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Volume 28, Number 8—August 2022
Research Letter

Estimating COVID-19 Vaccine Effectiveness for Skilled Nursing Facility Healthcare Personnel, California, USA

Monise MagroComments to Author , Andrea Parriott, Tisha Mitsunaga, and Erin Epson
Author affiliation: Author affiliation: California Department of Public Health, Richmond, California, USA

Main Article

Table

Estimated COVID-19 vaccine effectiveness among skilled nursing facility healthcare personnel, California, USA, January‒March 2021*

Models Vaccination status† No.
Vaccine effectiveness (95% CI), %
Case-patients Controls
No removal of previous positive results (4,238 case‒control participants; 2,119 matched pairs) Partial 465 629 37.5 (27.7–46.0)
Full 36 94 71.7 (55.9–81.8)
Removal of previous positive results within 90 d (3,742 case‒control participants; 1,871 matched pairs) Partial 430 567 35.6 (24.8–44.8)
Full 32 89 73.3 (57.5–83.3)
Removal of previous positive results within 180 d (3,424 case‒control participants; 1,712 matched pairs) Partial 394 524 36.3 (25.1–45.8)
Full 25 70 72.7 (54.3–83.7)

*Unadjusted analysis results are presented. Adjustment for sex, age, and Healthy Places Index scores did not substantially alter these estimates. †Partial vaccination: >1 dose before specimen collection date but final dose <14 d before specimen collection date; full vaccination: final dose >14 d before specimen collection date.

Main Article

Page created: May 26, 2022
Page updated: July 21, 2022
Page reviewed: July 21, 2022
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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