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

Atherstone, Christine J.; Guagliardo, Sarah Anne J.; Hawksworth, Anthony; O’Laughlin, Kevin; Wong, Kimberly; Sloan, Michelle L.; Henao, Olga; Rao, Carol Y.; McElroy, Peter D.; Bennett, Sarah D.

doi:10.3201/eid2909.230142

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

9 2023
By Atherstone, Christine J. ; Guagliardo, Sarah Anne J. ; Hawksworth, Anthony ; ...
http://dx.doi.org/10.3201/eid2909.230142
Source: Emerg Infect Dis. 2023; 29(9):1757-1764

[PDF-1.35 MB]

English

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Details:

Alternative Title:

Emerg Infect Dis
Personal Author:

Atherstone, Christine J. ; Guagliardo, Sarah Anne J. ; Hawksworth, Anthony ; O’Laughlin, Kevin ; Wong, Kimberly ; ... More +

Atherstone, Christine J. ; Guagliardo, Sarah Anne J. ; Hawksworth, Anthony ; O’Laughlin, Kevin ; Wong, Kimberly ; Sloan, Michelle L. ; Henao, Olga ; Rao, Carol Y. ; McElroy, Peter D. ; Bennett, Sarah D. Less -
Description:

The SARS-CoV-2 Delta variant, first identified in October 2020, quickly became the dominant variant worldwide. We used publicly available data to explore the relationship between illness and death (peak case rates, death rates, case-fatality rates) and selected predictors (percentage vaccinated, percentage of the population >65 years, population density, testing volume, index of mitigation policies) in 45 high-income countries during the Delta wave using rank-order correlation and ordinal regression. During the Delta-dominant period, most countries reported higher peak case rates (57%) and lower peak case-fatality rates (98%). Higher vaccination coverage was protective against peak case rates (odds ratio 0.95, 95% CI 0.91-0.99) and against peak death rates (odds ratio 0.96, 95% CI 0.91-0.99). Vaccination coverage was vital to preventing infection and death from COVID-19 during the Delta wave. As new variants emerge, public health authorities should encourage the uptake of COVID-19 vaccination and boosters.
Subjects:

[+]

COVID-19 COVID-19 Vaccines Developed Countries Humans SARS-CoV-2
Keywords:

[+]

Coronavirus Disease COVID-19 Testing Demographic Factors Epidemiology Morbidity Mortality Population Density Primary Prevention Respiratory Infections Severe Acute Respiratory Syndrome Coronavirus 2 Vaccination Coverage Viruses Zoonoses
Source:

Emerg Infect Dis. 2023; 29(9):1757-1764
Pubmed ID:

37494699
Pubmed Central ID:

PMC10461680
Document Type:

Journal Article
Volume:

29
Issue:

9
Collection(s):

Emerging Infectious Diseases
Main Document Checksum:

[+]

urn:sha256:1f0e82aa83f0e2c94d943a6ead9ab44f51be5305ced6557b469be332cdd4a6d9
Download URL:

https://stacks.cdc.gov/view/cdc/133574/cdc_133574_DS1.pdf
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