| Autor: |
Wenqiang Zhang, Yong Yue, Min Hu, Changhui Du, Cheng Wang, Xiaoli Tuo, Xiaoman Jiang, Shuangfeng Fan, Zhenhua Chen, Heng Chen, Xian Liang, Rongsheng Luan |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Scientific reports. 12(1) |
| ISSN: |
2045-2322 |
| Popis: |
International flights have accelerated the global spread of Coronavirus Disease 2019 (COVID-19). Determination of the optimal quarantine period for international travelers is crucial to prevent the local spread caused by imported COVID-19 cases. We performed a retrospective epidemiological study using 491 imported COVID-19 cases in Chengdu, China, to describe the characteristic of the cases and estimate the time from arrival to confirmation for international travelers using nonparametric survival methods. Among the 491 imported COVID-19 cases, 194 (39.5%) were asymptomatic infections. The mean age was 35.6 years (SD = 12.1 years) and 83.3% were men. The majority (74.1%) were screened positive for SARS-CoV-2, conducted by Chengdu Customs District, the People’s Republic of China. Asymptomatic cases were younger than presymptomatic or symptomatic cases (P |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink