| Autor: |
Ci Zhang, Chao Zhou, Wanqing Xu, Shimin Zheng, Yanxiao Gao, Peiqi Li, Luojia Deng, Xuezhixing Zhang, Qianxue Jiang, Frank Qian, Xianhong Li, Honghong Wang, Huachun Zou, Yinglin Xia, Tao Wang, Hui Lu, Han-Zhu Qian |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Infectious Medicine, Vol 2, Iss 1, Pp 11-18 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2772-431X |
| DOI: |
10.1016/j.imj.2022.12.001 |
| Popis: |
Background: Global evidence on the transmission of asymptomatic SARS-CoV-2 infection needs to be synthesized. Methods: A search of 4 electronic databases (PubMed, EMBASE, Cochrane Library, and Web of Science databases) as of January 24, 2021 was performed. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed. Studies which reported the transmission rate among close contacts with asymptomatic SARS-CoV-2 cases were included, and transmission activities occurred were considered. The transmission rates were pooled by zero-inflated beta distribution. The risk ratios (RRs) were calculated using random-effects models. Results: Of 4923 records retrieved and reviewed, 15 studies including 3917 close contacts with asymptomatic indexes were eligible. The pooled transmission rates were 1.79 per 100 person-days (or 1.79%, 95% confidence interval [CI] 0.41%–3.16%) by asymptomatic index, which is significantly lower than by presymptomatic (5.02%, 95% CI 2.37%–7.66%; p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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