In July 2021, Public Health-Seattle & King County investigated a coronavirus disease 2019 (COVID-19) outbreak at an indoor event intended for fully vaccinated individuals, revealing unvaccinated staff, limited masking, poor ventilation, and overcrowding. Supporting businesses to develop and implement comprehensive COVID-19 prevention plans is essential for reducing spread in these settings.
Keywords: COVID-19; SARS-CoV-2; indoor transmission; vaccination; ventilation.
Published by Oxford University Press on behalf of Infectious Diseases Society of America 2022.