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Chinese Journal of Preventive Medicine
;
(12): 1240-1244, 2021.
Article
in Chinese
| WPRIM
| ID: wpr-922718
ABSTRACT
An epidemiological investigation was carried out on a local cluster of outbreak caused by imported cases of Coronavirus Disease 2019 (COVID-19) in rural areas of Chengdu in December 2020, to find out the source of infection and the chain of transmission. According to