If you zoom in, "December" here mostly means 12/31, the exact day the virus appeared in public news: https://trends.google.com/trends/explore?date=2019-12-09%20

If you zoom in, "December" here mostly means 12/31, the exact day the virus appeared in public news: https://trends.google.com/trends/explore?date=2019-12-09%202020-01-09&geo=CN&q=sars https://trends.google.com/trends/explore?date=2019-12-09%202...