Today (August 5) Wuhan, Hubei held a press conference on the prevention and control of the new crown epidemic. Announced at the meeting,As of 24:00 on August 4, Wuhan has implemented closed management on 63 communities and 11 construction sites. 。
He Zhenyu, deputy director of the Wuhan Centers for Disease Control and Prevention, introduced that the genetic sequencing results of the virus samples of the infected persons in this epidemic are highly homologous to the Delta mutant strain, which has a high viral load, strong infectivity, and rapid spread.
In view of these characteristics, all people who were with the case “in the same space, in the same unit, and in the same building, four days before the onset” are close contacts of the case. Therefore, controlling close contacts is of great significance for controlling the source of infection, cutting off the route of transmission, preventing the spread of the virus, and preventing the spread of the epidemic. The best way to control many close contacts is to quickly close the case’s place of work and life. The cases in this wave of epidemics in Wuhan are all related to a tourist group in Huai’an, Jiangsu. In addition, the Zhuankou project site of the China Construction Third Engineering Bureau is a single transmission point. The site is densely staffed and concentrated on food and accommodation. The risk of gathering sexual transmission is greater. The rapid closure of the construction site and the surrounding 46 communities can achieve a “fast, accurate, and good” effect of blocking the spread of the epidemic.
With the deepening of the circulation work, Wuhan City has successively locked a group of close contacts and their associated personnel, and quickly closed management of other construction sites and 17 communities involved in the work and life of these personnel. In response to these closed management communities and construction sites, Wuhan implemented personnel “only entry but no exit”, strictly restricted the flow of personnel, and quickly carried out full-staff nucleic acid tests to screen positive cases and asymptomatic infections, so as to minimize the risk of spillage.