Infection rate and factors affecting close contacts of COVID-19 cases: A systematic review.

ABSTRACT:

Objective

Contact tracing plays an essential role in mitigating the impact of an epidemic. During the COVID-19 pandemic, studies of those who have been in close contact with confirmed cases offer critical insights to understand the epidemiological characteristics of SARS-CoV-2 better. This study conducts a meta-analysis of existing studies' infection rates and affecting factors.

Methods

We searched PubMed, Web of Science and CNKI from the inception to April 30 2022 to identify systematic reviews. Two reviewers independently extracted the data and assessed risk of bias. Meta-analyses were conducted to calculate pooled estimates by using Stata/SE 15.1 software.

Results

There were 47 studies in the meta-analysis. Among COVID-19 close contacts, older age (RR = 1.94, 95% C

SUBMITTER: Li Y 

PROVIDER: S-EPMC9877962 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature