Interpretation of the diagnosis and treatment protocol for COVID‐19 (Trial Version 9)

Since the outbreak of the COVID-19 pandemic, the National Health Commission of the People's Republic of China (NHC) issued a total of eight editions of the Diagnosis and Treatment Protocol for COVID-19 from January 15, 2020 to August 18, 2020 [1][2][3][4][5][6].As the clinical presentation of COVID-19 reported diversifies and the knowledge of its diagnosis and treatment evolves, the Protocol witnesses continuous refinement in the definition of clinical presentation and confirmed cases, solid optimization and streamlining of the diagnosis procedure, and provides additional evidence-based clinical management, serving as a pivotal role to the diagnosis and treatment of COVID-19 in China.With the experience in responding to local epidemics attributed to imported cases, NHC organized experts to study the disease transmission and characteristics of confirmed cases of the Delta and Omicron variants, analyzed domestic and international scientific evidence, and issued the ninth trial version of the Diagnosis and Treatment Protocol for COVID-19 on March 15, 2022 [7].The new version highlights the improvement in the following respects: ( 1) Optimization of case identification and reporting; (2) Determination of quarantine and treatment sites based on the disease severity; (3) Further standardization of antiviral therapy; (4) Improvement in Traditional Chinese Medicine treatment; (5) Adjustment of the criteria and precautions regarding release from quarantine and discharge from hospital.

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