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Volume 29, Number 9—September 2023
Research

COVID-19 Epidemiology during Delta Variant Dominance Period in 45 High-Income Countries, 2020–2021

Christine J. AtherstoneComments to Author , Sarah Anne J. Guagliardo, Anthony Hawksworth, Kevin O’Laughlin, Kimberly Wong, Michelle L. Sloan, Olga Henao, Carol Y. Rao, Peter D. McElroy, and Sarah D. Bennett
Author affiliation: Centers for Disease Control and Prevention, Atlanta, Georgia, USA

Main Article

Table 4

Heat map of bivariate analyses and ordinal regression model results in study of COVID-19 epidemiology in Delta variant dominance period in 45 high-income countries, December 2020–November 2021*

  Peak rate ratio†
Bivariate analysis
Ordinal regression results
Predictor variables Cases Deaths CFR   Cases Deaths CFR
% Vaccination coverage‡†              
% population >65 y of age              
Population density, persons/km2              
Median stringency index†              
Median daily testing volume†              

*Blue shading indicates negative (protective) association, yellow shading indicates positive association, and no shading indicates no significant association. CFR, case-fatality rate. †Delta dominance (DD) period: pre-Delta (PD) period ratio. 
‡Indicates persons with primary series at date of Delta predominance.

Main Article

Page created: July 11, 2023
Page updated: August 20, 2023
Page reviewed: August 20, 2023
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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