학술논문
SARS-CoV-2 Infection upon Leaving the Tokyo 2020 Olympic and Paralympic Games
Document Type
Journal Article
Author
Source
Internal Medicine. 2022, 61(24):3659
Subject
Language
English
ISSN
0918-2918
1349-7235
1349-7235
Abstract
Results A total of 12,072 foreign participants were enrolled, 13 (0.11%) of whom had a positive PCR test result. None of these cases were broadcasters or members of the press, were tested outside the Olympic Village, or had a history of COVID-19 infection. The effectiveness of full vaccination and vaccination at least once (≥14 days ago) was 74% [95% confidence interval (CI): 6-93%] and 81% (95% CI: 30-95%), respectively. Three breakthrough infections with the Delta variant were observed in 6,485 fully vaccinated participants (0.05%). The positivity rate was 0.09% among adherents to the bubble system and 0.28% among non-adherents, but this difference was not significant.