Effectiveness of COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Frontline Workers Before and During B.1.617.2 (Delta) Variant Predominance — Eight U.S. Locations, December 2020–August 2021

Fowlkes, Ashley; Gaglani, Manjusha; Groover, Kimberly; Thiese, Matthew S.; Tyner, Harmony; Ellingson, Katherine

doi:10.15585/mmwr.mm7034e4

i

Effectiveness of COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Frontline Workers Before and During B.1.617.2 (Delta) Variant Predominance — Eight U.S. Locations, December 2020–August 2021

Supporting Files Public Domain

8 27 2021
By Fowlkes, Ashley ; Gaglani, Manjusha ; Groover, Kimberly ; ...
Series: Weekly Report: Morbidity and Mortality Weekly Report (MMWR)

File Language:

English

Details

Journal Article:

Morbidity and Mortality Weekly Report (MMWR)
Personal Author:

Fowlkes, Ashley ; Gaglani, Manjusha ; Groover, Kimberly ; Thiese, Matthew S. ; Tyner, Harmony ; Ellingson, Katherine
Corporate Authors:

HEROES-RECOVER Cohorts
Description:

During December 14, 2020-April 10, 2021, data from the HEROES-RECOVER Cohorts,* a network of prospective cohorts among frontline workers, showed that the Pfizer-BioNTech and Moderna mRNA COVID-19 vaccines were approximately 90% effective in preventing symptomatic and asymptomatic infection with SARS-CoV-2, the Virus that causes COVID-19, in real-world conditions (1,2). This report updates vaccine effectiveness (VE) estimates including all COVID-19 vaccines available through August 14, 2021, and examines whether VE differs for adults with increasing time since completion of all recommended vaccine doses. VE before and during SARS-CoV-2 B.1.617.2 (Delta) Variants predominance, which coincided with an increase in reported COVID-19 vaccine breakthrough infections, were compared (3,4).
Subjects:

Cohort Studies CoronaVirus Infections COVID-19 COVID-19 Vaccines Emergency Responders Health Personnel Humans SARS-CoV-2 Time Factors Vaccination Vaccines, Synthetic
Source:

MMWR Morbidity Mortal Weekly Rep. 70(34):1167-1169
Series:

Weekly Report: Morbidity and Mortality Weekly Report (MMWR)
DOI:

http://dx.doi.org/10.15585/mmwr.mm7034e4
ISSN:

0149-2195 (print) ; 1545-861X (digital)
Pubmed ID:

34437521
Pubmed Central ID:

PMC8389394
Document Type:

Journal Article
Place as Subject:

United States
Pages in Document:

3 pdf pages
Volume:

70
Issue:

34
Collection(s):

Morbidity and Mortality Weekly Report (MMWR)
Main Document Checksum:

urn:sha-512:57fbbcf41b4469cf55f07a07182a01c40a332c9db3a78d6db9e123c000ba5fa6b279925a7016a26dac66eca6cf6ccadee223e223c1aee599ab7247e58ec9eaef
Download URL:

https://stacks.cdc.gov/view/cdc/109827/cdc_109827_DS1.pdf
File Type:

[PDF - 201.97 KB ]

mm7034e4.nxml

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File Language:

English

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