The Wuhan Centers for Disease Control and Prevention first admitted on December 31, 2019 that the notice of unknown pneumonia circulating on the Internet actually existed
Source: Beijing News: [Wuhan disease control confirmed: there are pneumonia patients of unknown cause in the local area, the number of cases is in the statistics] (http://www.bjnews.com.cn/news/2019/12/31/668430.html)
