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Comparison of the Baidu Index of COVID-19 Related Symptoms in Hubei Province from January 20, 2020 to February 20, 2020 and the same period in 2017–2019 A: Comparison of daily average increment of the Baidu index related symptoms of COVID-19 in Hubei province; B: The higher the increment in the Baidu index of COVID-19 relative symptoms, the darker the area of the corresponding organ; C: The Baidu index trend of upper and lower respiratory symptoms related to COVID-19.
