On April 6, the Joint Prevention and Control Mechanism of the State Council held a press conference to introduce the situation related to the strict and earnest efforts to prevent and control the epidemic. At the meeting, Wang Huaqing, chief expert of the immunization program of the Chinese Center for Disease Control and Prevention, introduced that the Omicron variant has the characteristics of high infection intensity, fast transmission speed, and hidden transmission process. These factors have led to an increase in the risk of infection. For the elderly and people with underlying medical conditions, the best way to reduce severe illness and death is to get vaccinated.