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BEIJING, March 6 (Xinhua) -- China has expanded and optimized the utilization of drugs and therapies in the treatment of the novel coronavirus disease (COVID-19) to block the conversion of mild cases to severe cases and save critically ill patients.

Noting there has been some debate between China and the United States over the origin of the virus recently, Geng said it was the U.S. side that provoked this debate by first claiming that the virus originated in China and first using the terms "Chinese virus" and "Wuhan virus."

Local authorities have been on high alert to adjust epidemic response measures according to dynamic changes in risk levels. Wuhan has shifted its focus to business resumption as the city is now categorized into a low-risk region. Chaoyang District of Beijing, on the other hand, was categorized into a high-risk region for clustered infections reported in the past week and is required to take stringent virus control measures.

During the most difficult period of China's fight against COVID-19, African countries provided China with valuable support, which will be engraved in the hearts of the Chinese people, Xi said.

Zhang introduced China's all-out efforts in stabilizing employment while paying special attention to the COVID-19 prevention and control during an online meeting of the G20 labor and employment ministers.