The main reason for the surge is that the number of clinically diagnosed cases in Hubei Province has been included in the number of confirmed cases after the release of the “Pneumonia Treatment Plan for New Coronavirus Infections (Trial Version 5)”. The new criterion of “clinical diagnosis” has been added to the classification of cases in Hubei Province, so that patients can receive standardized treatment as early as possible for confirmed cases and further increase the success rate of treatment. Under this program, the diagnosis of previous suspected cases was revised and new patients were diagnosed according to the new diagnosis, resulting in a surge of new confirmed cases.