tetano
Editor, Senior Moderator
Emerg Infect Dis
. 2021 Nov 18;28(1).
doi: 10.3201/eid2801.212220. Online ahead of print.
Multistate Outbreak of SARS-CoV-2 Infections, Including Vaccine Breakthrough Infections, Associated with Large Public Gatherings, United States
Radhika Gharpure, Samira Sami, Johanna Vostok, Hillary Johnson, Noemi Hall, Anne Foreman, Rebecca T Sabo, Petra L Schubert, Hanna Shephard, Vance R Brown, Ben Brumfield, Jessica N Ricaldi, Andrew B Conley, Lindsay Zielinski, Lenka Malec, Alexandra P Newman, Michelle Chang, Lauren E Finn, Cameron Stainken, Anil T Mangla, Patrick Eteme, Morgan Wieck, Alison Green, Alexandra Edmundson, Diana Reichbind, Vernell Brown Jr, Laura Quiñones, Allison Longenberger, Elke Hess, Megan Gumke, Alicia Manion, Hannah Thomas, Carla A Barrios, Adrianna Koczwara, Thelonious W Williams, Marcia Pearlowitz, Moussokoura Assoumou, Alessandra F Senisse Pajares, Hope Dishman, Cody Schardin, Xiong Wang, Kendalyn Stephens, Nakema S Moss, Gurpalik Singh, Christine Feaster, Lindsey Martin Webb, Anna Krueger, Kristen Dickerson, Courtney Dewart, Bree Barbeau, Amelia Salmanson, Lawrence C Madoff, Julie M Villanueva, Catherine M Brown, A Scott Laney
Abstract
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.
Keywords: COVID-19; COVID-19 vaccines; Massachusetts; SARS-CoV-2; United States; breakthrough infections; coronavirus disease; coronaviruses; disease outbreaks; multistate outbreak; respiratory infections; severe acute respiratory syndrome coronavirus 2; viruses; zoonoses.
. 2021 Nov 18;28(1).
doi: 10.3201/eid2801.212220. Online ahead of print.
Multistate Outbreak of SARS-CoV-2 Infections, Including Vaccine Breakthrough Infections, Associated with Large Public Gatherings, United States
Radhika Gharpure, Samira Sami, Johanna Vostok, Hillary Johnson, Noemi Hall, Anne Foreman, Rebecca T Sabo, Petra L Schubert, Hanna Shephard, Vance R Brown, Ben Brumfield, Jessica N Ricaldi, Andrew B Conley, Lindsay Zielinski, Lenka Malec, Alexandra P Newman, Michelle Chang, Lauren E Finn, Cameron Stainken, Anil T Mangla, Patrick Eteme, Morgan Wieck, Alison Green, Alexandra Edmundson, Diana Reichbind, Vernell Brown Jr, Laura Quiñones, Allison Longenberger, Elke Hess, Megan Gumke, Alicia Manion, Hannah Thomas, Carla A Barrios, Adrianna Koczwara, Thelonious W Williams, Marcia Pearlowitz, Moussokoura Assoumou, Alessandra F Senisse Pajares, Hope Dishman, Cody Schardin, Xiong Wang, Kendalyn Stephens, Nakema S Moss, Gurpalik Singh, Christine Feaster, Lindsey Martin Webb, Anna Krueger, Kristen Dickerson, Courtney Dewart, Bree Barbeau, Amelia Salmanson, Lawrence C Madoff, Julie M Villanueva, Catherine M Brown, A Scott Laney
- PMID: 34793690
- DOI: 10.3201/eid2801.212220
Abstract
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.
Keywords: COVID-19; COVID-19 vaccines; Massachusetts; SARS-CoV-2; United States; breakthrough infections; coronavirus disease; coronaviruses; disease outbreaks; multistate outbreak; respiratory infections; severe acute respiratory syndrome coronavirus 2; viruses; zoonoses.