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- Title
Multistate Outbreak of SARS-CoV-2 Infections, Including Vaccine Breakthrough Infections, Associated with Large Public Gatherings, United States.
- Authors
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.
- 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.
- Subjects
MASSACHUSETTS; BREAKTHROUGH infections; SARS-CoV-2; COVID-19; CONTACT tracing
- Publication
Emerging Infectious Diseases, 2022, Vol 28, Issue 1, p35
- ISSN
1080-6040
- Publication type
Article
- DOI
10.3201/eid2801.212220