Bars and restaurants are high-risk settings for SARS-CoV-2 transmission. A multistate outbreak after a bar gathering in Chicago, Illinois, USA, highlights Omicron variant transmissibility, the value of local genomic surveillance and interstate coordination, vaccination value, and the potential for rapid transmission of a novel variant across multiple states after 1 event.
Keywords: 2019 novel coronavirus disease; COVID-19; Chicago; Illinois; Omicron; SARS-CoV-2; United States; coronavirus disease; disease outbreaks; respiratory infections; severe acute respiratory syndrome coronavirus 2; viruses; zoonoses.