Increase in the coronavirus disease 2019 (COVID-19) attack rate of fully vaccinated healthcare workers with high-risk household exposures correlates with the rise of the severe acute respiratory coronavirus virus 2 (SARS-CoV-2) B.1.617.2 (delta) variant

• Published in: Infection control and hospital epidemiology Vol. 43; no. 5; pp. 661 - 662
• Main Authors: Selby, Laura M., Hewlett, Angela, Rupp, Mark E., Starlin, Richard
• Format: Journal Article
• Language: English
• Published: New York, USA Cambridge University Press 01-05-2022
• Subjects: Asymptomatic; Children & youth; Coronaviruses; COVID-19; COVID-19 vaccines; Drug dosages; Employees; Households; Infections; Medical personnel; Medicine; mRNA vaccines; Occupational health; Public health; Research Brief; Severe acute respiratory syndrome coronavirus 2; United States > US; Nebraska
• ISSN: 0899-823X; 1559-6834
• DOI: 10.1017/ice.2022.20

Based on genomic sequencing from the Nebraska Public Health Laboratory, the δ variant was first documented in Nebraska Medicine employees at the end of June 2021, and it quickly became the predominant variant in the community as well as the cause of HCW infections after July 1, 2021. When mRNA vaccines became available in December 2020, the Nebraska Medicine Employee Health Department implemented a screening program for fully vaccinated employees who had had a high-risk exposure. [...]Nebraska Medicine relies on employees to self-report their exposures and symptoms, which remains a limitation of our data.