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New coronavirus may have emerged in summer 2019: study

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A surge in hospital visits and internet searches related to Covid-19 symptoms from the Chinese city of Wuhan suggests the coronavirus may have been circulating since August 2019, according to a preliminary study by researchers at Boston University and Harvard.

[WASHINGTON] A surge in hospital visits and internet searches related to Covid-19 symptoms from the Chinese city of Wuhan suggests the coronavirus may have been circulating since August 2019, according to a preliminary study by researchers at Boston University and Harvard.

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