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An important lesson that can be learned from China's efforts to contain the disease is that people should avoid going outdoors and gathering with others, Zhao said.

An Norovirus outbreak swept through the games, infecting dozens of volunteers and leaving others in quarantine. And still more than 14,000 volunteers trudged on through the games, through the cold and the long drives on shuttle buses and occasional bouts of abuse.

Among traditional networks, the National Geographic cable channel secured eight wins, most of them for documentary Free Solo, and Comcast Corp's NBC won seven.

An IMF research note said: "These firms would thus be responsible for doing what they do best — innovating and interfacing with customers. The central bank, instead, would provide trust to the system by requiring that coins be fully backed by central bank reserves, and by supervising the coin issuers. At the same time, this limits costs for the central bank, as well as some of the risks."

An illustration picture shows the new COVIDSafe app by the Australian government on a mobile phone, as the country works to curb the spread of the coronavirus disease (COVID-19), in this picture taken on April 28, 2020. [Photo/Agencies]