China News Service, Dalian, July 31 (Reporter Yang Yi) Meng Jun, deputy director of the Dalian Center for Disease Control and Prevention, stated at the Dalian epidemic prevention and control press conference on July 31 that in the next few days, it is not ruled out that it is related to Kaiyang. Among the close contacts, asymptomatic infections continue to be detected, and there is a possibility of long-latency positive detection. The community cases in Dalian are mainly concentrated in the streets of Dalian Bay, and the possibility of small-scale community transmission in the streets of Dalian Bay cannot be ruled out.
As of 24:00 on July 30, a total of 115 confirmed cases and asymptomatic infections related to the Dalian epidemic have been reported, among which 100 cases of new coronary pneumonia infections have been reported in Dalian, including 68 confirmed cases and 32 asymptomatic infections.
Among the 100 cases of new coronary pneumonia infection reported in Dalian, according to the source of the case, 85 cases are directly or indirectly related to Kaiyang, accounting for 85% of the total number of new coronary pneumonia infections. The source of infection of 15 cases is yet to be further investigated Verify. Fifteen cases of the epidemic were imported into Anshan and Tieling cities in Liaoning Province, Siping, Changchun and Baicheng in Jilin Province, Hegang and Suihua in Heilongjiang Province, Fuzhou in Fujian Province and Changping District in Beijing. All employees of Kaiyang Company or related cases.
The epidemic has constituted an outbreak in Kaiyang, and has constituted a cluster of epidemics in families, places of residence, co-diners, and co-riders.
Meng Jun said that the latest environmental exposure of Dalian Kaiyang employees involved in the epidemic was July 21. According to the calculation of the maximum incubation period of 14 days for new coronary pneumonia, most cases related to Kaiyang should be onset before August 4. She emphasized that at this critical period of epidemic prevention and control, there is no room for relaxation in epidemic prevention and control.
Meng Jun said that on July 22, Dalian first reported a new coronary pneumonia infection, which was a confirmed case. After that, close contacts were checked and nucleic acid tests were carried out. More asymptomatic infections were found, and subsequent new diagnoses were made. The cases were all transformed from asymptomatic infections, and the outbreak was detected earlier. The onset time of cases with self-reported clinical manifestations was analyzed. The onset began on July 9 at the earliest. The peak of reporting a positive nucleic acid test was July 24, and the number of daily reports showed a downward trend. Due to the development of screening, unrelated cases have increased, but the overall trend has stabilized. (Finish)