[Analysis on infection risk in secondary close contacts of COVID-19 patients].
Zhonghua Liu Xing Bing Xue Za Zhi
; 43(8): 1237-1240, 2022 Aug 10.
Article
in Chinese
| MEDLINE | ID: covidwho-1994239
ABSTRACT
Objective:
To study the infection rate of secondary close contacts of COVID-19 patients, and assess the infection risk in the contacts.Methods:
COVID-19 patients' close contacts (with a clear exposure time to index case) with negative nucleic acid test results and secondary close contacts were surveyed in continuous isolation and medical observation in this prospective study. The dynamic nucleic acid test results of the close contacts and secondary contacts of COVID-19 patients were collected to assess their risk of infection.Results:
A total of 4 533 close contacts were surveyed, in whom 14 were confirmed as COVID-19 patients with overall secondary attack rate of 0.31%, and 4 201 secondary contacts were tracked, in whom no subsequent infections occurred.Conclusion:
Close contacts of COVID-19 patients entered in centralized isolation for medical observation with negative nucleic acid tese results,the secondary close contacts of COVID-19 patients have no risk of infection.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Nucleic Acids
/
COVID-19
Type of study:
Cohort study
/
Observational study
/
Prognostic study
Limits:
Humans
Language:
Chinese
Journal:
Zhonghua Liu Xing Bing Xue Za Zhi
Year:
2022
Document Type:
Article
Affiliation country:
Cma.j.cn112338-20220314-00186
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