Author: Solomon Hsiang; Daniel Allen; Sebastien Annan-Phan; Kendon Bell; Ian Bolliger; Trinetta Chong; Hannah Druckenmiller; Andrew Hultgren; Luna Yue Huang; Emma Krasovich; Peiley Lau; Jaecheol Lee; Esther Rolf; Jeanette Tseng; Tiffany Wu
Title: The Effect of Large-Scale Anti-Contagion Policies on the Coronavirus (COVID-19) Pandemic Document date: 2020_3_27
ID: gtfx5cp4_123
Snippet: As of the time of writing, the criteria for being diagnosed with COVID-19 had changed twice in China. 9 On February 13, 2020, China recategorized patients who exhibited symptoms, as determined through a chest scan, as part of the "confirmed" cases count even if they had not tested positive in the PCR test. This was due to concerns that the PCR test had relatively high false negative rates. On February 20, 2020, China reversed this decision. We in.....
Document: As of the time of writing, the criteria for being diagnosed with COVID-19 had changed twice in China. 9 On February 13, 2020, China recategorized patients who exhibited symptoms, as determined through a chest scan, as part of the "confirmed" cases count even if they had not tested positive in the PCR test. This was due to concerns that the PCR test had relatively high false negative rates. On February 20, 2020, China reversed this decision. We included this information in the dataset because it could have potentially changed the levels and short-term growth rates of the number of confirmed cases.
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