[Progress in research of etiology and epidemiology of 2019-nCoV Omicron variant].
Zhonghua Liu Xing Bing Xue Za Zhi
; 43(11): 1691-1698, 2022 Nov 10.
Article
in Chinese
| MEDLINE | ID: covidwho-2127269
ABSTRACT
2019-nCoV Omicron variant has become predominant in the world. New subvariants with further mutations in their spike proteins are continuously emerging. Compared with the wild type and other variants of concern, Omicron variant exhibits altered etiological and epidemiological characteristics, with weakened pathogenicity and toxicity in laboratory mice and hamsters as well as enhanced immune escape capacity. The human infections are more likely to be asymptomatic and mild characterized by upper respiratory tract symptoms with reduced risk of hospitalization and death. In addition, Omicron variant can transmit more rapidly and shows shorter incubation period to cause infection, and the variant is more likely to transmit through contamination of object surfaces and aerosols spread. This paper summarizes the etiological and epidemiological characteristics of Omicron variant to provide a reference for the effective prevention and control of Omicron variant infection.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
SARS-CoV-2
/
COVID-19
Type of study:
Etiology study
/
Observational study
/
Prognostic study
Topics:
Variants
Limits:
Animals
/
Humans
Language:
Chinese
Journal:
Zhonghua Liu Xing Bing Xue Za Zhi
Year:
2022
Document Type:
Article
Affiliation country:
Cma.j.cn112338-20220929-00829
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