due to the strong infectivity, concealment and fast transmission speed of Omicron mutant, it is more difficult to quickly identify and track the early infected people, especially in restaurants, schools, wholesale markets, logistics parks and other crowded places, which leads to the shortage of prevention and control resources such as nucleic acid detection, flow tracing, isolation control and medical treatment, and the difficulty of epidemic prevention and rapid disposal. In the face of the complicated and severe epidemic situation, our city adheres to the general policy of "dynamic clearing" and follows the prevention and control strategy of "stabilizing the east and controlling the west, sweeping the floor and clearing the bottom, chasing the sun and catching up with the new, and making every effort to clear the epidemic". At present, the prevention and control situation has generally stabilized and improved.