Transmission dynamics of SARS-CoV-2 Omicron variant infections in Hangzhou, Zhejiang, China, January-February 2022.

ABSTRACT:

Objectives

We aimed to explore the transmission dynamics of the Omicron BA.1.1 variant in an outbreak in China.

Methods

We constructed 113 transmission pairs based on the time of exposure and symptom onset for identified infectors and infectees, using the epidemiological data collected during an outbreak in Hangzhou, Zhejiang province, China, between January and February 2022. The key epidemiological parameters were estimated.

Results

The mean estimates of the incubation period and latent period distributions were 3.8 days (95% credible interval: 3.5, 4.1) and 3.1 days (2.8, 3.5), respectively. The overall transmission risk peaked at symptom onset, and we estimated that 33.6% (24.8, 42.5) of transmission occurred before symptom onset. The forward generation time decre

SUBMITTER: Xin H 

PROVIDER: S-EPMC9616478 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature