The COVID-19 pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has sustained its catastrophic
effects worldwide.
On August 15, a positive covid-19 patient was found, and Huadu District of Guangzhou City immediately isolated the patient for treatment, involving 3 days and 3 nucleic acid checks, efficiently and quickly controlling the spread of the epidemic and ensuring the safety of residents
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