Abstract
The tendency of the Omicron variant to rapidly became the dominant SARS-CoV-2 strain and its weaker virulence than other strains worldwide has prompted many countries to adjust their public health strategies. This work summarizes all appropriate clinical interventions to reduce the public health burden caused by COVID-19 according to guidelines from the World Health Organization and 10 countries, i.e., the United States of America (USA), India, France, Germany, Brazil, South Korea, Japan, Italy, the United Kingdom (UK), and China. Five stages of COVID-19 were identified: asymptomatic infection and mild, moderate, severe, and critical illness. Most guidelines recommend antivirals starting with mild cases for those from Germany and India. Since more drugs are being developed and are becoming available to COVID-19 patients, guidelines are increasingly being updated with new pharmacological intervention strategies. Thus, a global view needs to be adopted to provide helpful options and precise treatment strategies during the lasting fight against the COVID-19 pandemic.
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