[Progress in research of epidemiology of 2019-nCoV reinfection].
Zhonghua Liu Xing Bing Xue Za Zhi
; 44(3): 360-366, 2023 Mar 10.
Article
in Chinese
| MEDLINE | ID: covidwho-2289685
ABSTRACT
Continuous evolution of Omicron variant of 2019-nCoV has resulted in a rapid and simultaneous emergences of novel sub-variants with increased immune escape ability, higher reinfection risk and shorter time interval between infections. Compared with the first infection, the reinfection would still pose exceed risk to people's health although the clinical manifestations of the reinfection might be milder and the risk for severe illness or death is lower. The reinfection is highly associated with people's vaccination status, immunity level, age, working and residential factors. Those who have not received 2019-nCoV vaccination, the elderly and those with comorbidities, especially the previous 2019-nCoV patients with severe/critical illness, are at high risk for the reinfection. Booster doses of vaccine might play an additional role in the prevention of the reinfection and severe illness on the basis of natural immunity.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
COVID-19
Type of study:
Observational study
/
Prognostic study
Topics:
Vaccines
/
Variants
Limits:
Aged
/
Humans
Language:
Chinese
Journal:
Zhonghua Liu Xing Bing Xue Za Zhi
Year:
2023
Document Type:
Article
Affiliation country:
Cma.j.cn112338-20230110-00022
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