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MedRxiv.org: (This is a preprint article and has not been peer-reviewed):
WeChat, a Chinese social media, may early detect the SARS-CoV-2 outbreak in 2019
Wenjun Wang, Yikai Wang, Xin Zhang, Yaping Li, Xiaoli Jia, Shuangsuo Dang
WeChat (called Weixin in China), provided by Tencent Inc., is the largest social media in China with over 1 billion monthly active users...Using it may early detect the outbreak ahead of two weeks compared with the traditional surveillance systems in China...
https://www.medrxiv.org/content/10.1....full.pdf+html
WeChat, a Chinese social media, may early detect the SARS-CoV-2 outbreak in 2019
Wenjun Wang, Yikai Wang, Xin Zhang, Yaping Li, Xiaoli Jia, Shuangsuo Dang
WeChat (called Weixin in China), provided by Tencent Inc., is the largest social media in China with over 1 billion monthly active users...Using it may early detect the outbreak ahead of two weeks compared with the traditional surveillance systems in China...
https://www.medrxiv.org/content/10.1....full.pdf+html