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This study was based on the numerical analysis on the number of confirmed cases of new-type coronavirus pneumonia in Wuhan announced by the National Health Commission of the People's Republic of China, and the confirmed cases is collected from 15 January to present (30 January). The analysis results show that during this period, the number of confirmed cases increased strictly according to a single exponential law, indicating that the virus transmission showed a chain reaction. The maindoi:10.31219/osf.io/ek9n4 fatcat:kuh657ri7zdphoyo2pzyt5udvq