Transmission risk of asymptomatic SARS-CoV-2 infection: a systematic review and meta-analysis.

ABSTRACT:

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 indexe

SUBMITTER: Zhang C 

PROVIDER: S-EPMC9757919 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature