The new coronavirus appeared in the United States in mid-December 2019, several weeks before the official discovery in China. According to the Wall Street Journal of the United States, a government study released by US CDC scientists on November 30 showed that as early as 2019 In mid-December, the new coronavirus appeared in the United States, which was several weeks before the official discovery of the new coronavirus in China and one month before the first confirmed case in the United States was discovered by the US public health department.
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