On April 25, Yantai City, Shandong Province held a press conference on epidemic prevention and control to introduce the latest situation of epidemic prevention and control.
The reporter learned from the press conference that from 0:00 to 24:00 on April 24, Yantai New There were 36 additional infections, including 2 confirmed cases, all of which were common types, and 34 asymptomatic infections, all of which have been transferred to designated hospitals.
Among the newly infected persons: 2 confirmed cases and 22 asymptomatic infections in Zhaoyuan City were all detected in the centralized quarantine personnel. Among the 9 cases in Penglai City, 3 cases were detected in the centralized isolation personnel, of which 2 cases were close contacts of asymptomatic infected persons reported on the 23rd, and 1 case was from Xiwutongkuang Village, Jinling Town, Zhaoyuan City to Penglai; 6 cases were found in the nucleic acid screening of risk personnel in key areas. There were 2 cases in Zhifu District, 1 case was detected in the centralized isolation personnel, and 1 case was found in the nucleic acid screening of risk personnel in key areas, all of whom were asymptomatic infected people in Zhaoyuan City at the same time. One case in Laizhou City was detected in the centralized isolation personnel, and it was a co-resident of the asymptomatic infection reported on the 23rd.
A total of 1,700 people in close contact and 3,179 people in sub-close contact were investigated in Yantai City, all of which implemented isolation control measures. The whole genome sequencing of the virus was carried out for the first time. So far, the gene sequencing analysis of 16 local cases in 4 districts and cities has been completed. It is the same transmission chain. The genotype of the cases is Omicron BA.2.3 evolutionary branch. Find.
The reporter learned from the press conference that with the development of the epidemic, the number of confirmed cases and asymptomatic infections in Yantai City has shown a rapid growth trend in the past two days. Since the outbreak of the epidemic was discovered in Yantai City on April 22, it has rapidly identified risk areas through epidemiological investigations, increased the density of regional nucleic acid testing, and screened out infected people in a timely manner. Combined with epidemiological history, clinical manifestations, and laboratory tests As a result, a clear diagnosis was made.
The original outbreak in Yantai City was caused by the Omicron BA.2 variant strain, which is more infectious and has a shorter incubation period. At present, it is still in the common incubation period of new coronavirus infection in the past two days. Most of these newly confirmed cases and asymptomatic infections are detected in centralized isolation points, and a few are in closed and controlled areas. The findings show that the division and management of the “three areas” of the closed area, the control area, and the prevention area in the on-site epidemic disposal is scientific, and it has played a good role in risk identification and control.
Combining the characteristics of these cases, the epidemic shows obvious spatial clustering, and it may have been hidden for a period of time. Faced with the characteristics of fast transmission, strong concealment, and short incubation period of the Omicron variant strain, the epidemic response needs to race against time, fast flow adjustment, fast detection, fast transportation, and fast isolation, and “fast to fast” to strive for the shortest time. All sources of infection can be found and isolated within a short period of time, so as to block the spread of the epidemic and achieve zero social infection in a short period of time.
Source: CCTV News