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Gharpure, Radhika; Sami, Samira; Vostok, Johanna; Johnson, Hillary; Hall, Noemi; Foreman, Anne; Sabo, Rebecca T; Schubert, Petra L; Shephard, Hanna; Brown, Vance R; Brumfield, Ben; Ricaldi, Jessica N; Conley, Andrew B; Zielinski, Lindsay; Malec, Lenka; Newman, Alexandra P; Chang, Michelle; Finn, Lauren E; Stainken, Cameron; Mangla, Anil T; Eteme, Patrick; Wieck, Morgan; Green, Alison; Edmundson, Alexandra; Reichbind, Diana; Brown, Jr, Vernell; Quiñones, Laura; Longenberger, Allison; Hess, Elke; Gumke, Megan; Manion, Alicia; Thomas, Hannah; Barrios, Carla A; Koczwara, Adrianna; Williams, Thelonious W; Pearlowitz, Marcia; Assoumou, Moussokoura; Senisse Pajares, Alessandra F; Dishman, Hope; Schardin, Cody; Wang, Xiong; Stephens, Kendalyn; Moss, Nakema S; Singh, Gurpalik; Feaster, Christine; Webb, Lindsey Martin; Krueger, Anna; Dickerson, Kristen; Dewart, Courtney; Barbeau, Bree; Salmanson, Amelia; Madoff, Lawrence C; Villanueva, Julie M; Brown, Catherine M; Laney, A Scott
Emerging infectious diseases, 01/2022, Letnik: 28, Številka: 1Journal Article
During July 2021, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) B.1.617.2 variant infections, including vaccine breakthrough infections, occurred after large public gatherings in Provincetown, Massachusetts, USA, prompting a multistate investigation. Public health departments identified primary and secondary cases by using coronavirus disease surveillance data, case investigations, and contact tracing. A primary case was defined as SARS-CoV-2 detected <14 days after travel to or residence in Provincetown during July 3-17. A secondary case was defined as SARS-CoV-2 detected <14 days after close contact with a person who had a primary case but without travel to or residence in Provincetown during July 3-August 10. We identified 1,098 primary cases and 30 secondary cases associated with 26 primary cases among fully and non-fully vaccinated persons. Large gatherings can have widespread effects on SARS-CoV-2 transmission, and fully vaccinated persons should take precautions, such as masking, to prevent SARS-CoV-2 transmission, particularly during substantial or high transmission.
