Impact of public health and social measures on contact dynamics during a SARS-CoV-2 Omicron variant outbreak in Quanzhou, China, March to April 2022.

ABSTRACT:

Objectives

To evaluate the impact of early implementation of public health and social measures (PHSMs) on contact rates over time and explore contact behavior of asymptomatic versus symptomatic cases.

Methods

We used the largest contact tracing data in China thus far to estimate the mean contacts over time by age groups and contact settings. We used bootstrap with replacement to quantify the uncertainty of contact matrixes. The Pearson correlation was performed to demonstrate the number of contacts over time in relation to the evolution of restrictions. In addition, we analyzed the index cases with a high number of contacts and index cases that produced a high number of secondary cases.

Results

Rapidly adapted PHSMs can reduce the mean contact rates in public places w

SUBMITTER: Guo Y 

PROVIDER: S-EPMC10037913 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature