3869。 Wuhan COVID-19 Epidemic Prevention and Control Headquarters specially set up an epidemic-related big data and epidemiological investigation team, and organized municipal health, disease control, public security, civil affairs, justice, statistics and other departments to compare, copy and complete cases online and offline in Wuhan epidemic prevention and control big data information system, municipal funeral information system, municipal medical administration COVID-19 information system and municipal COVID-19 virus nucleic acid detection system. Collect data of all epidemic-related places, including fever clinics, hospitals, cabins, isolation points, epidemic-related communities, prisons and old-age care institutions under the jurisdiction of public security, justice and civil affairs departments, and collect all personal information of all cases, and check them one by one through medical institutions, street communities, grassroots police stations, patients' units and their families. As of 24: 00 on April 16, the number of confirmed cases has increased/Kloc.