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Research Article: Predictors of COVID- Severity in Elderly Patients Infected by Omicron in China, December – February

Date Published: 2023-07-11

Introduction:
The widespread of a coronavirus disease (COVID-) caused by the severe acute respiratory syndrome coronavirus (SARS-CoV-) has become a serious global public health risk and has been classified as the sixth global public health emergency. COVID- has evolved into variant strains of different virulence and transmission, such as Alpha (B...), Beta (B..), Gamma (P.), Delta (B...) and Omicron (B...). Omicron mutant enhances its infectivity and spreading power, causing wider spread. , Omicron spread also in highly…

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