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
-
8 27 2021
Source: MMWR Morb Mortal Wkly Rep. 70(34):1167-1169 -
Alternative Title:MMWR Morb Mortal Wkly Rep
-
Personal Author:
-
Corporate Authors:
-
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:
-
Pubmed ID:34437521
-
Pubmed Central ID:PMC8389394
-
Document Type:
-
Place as Subject:
-
Collection(s):
-
Main Document Checksum:
-
File Type: