"The domestic epidemic situation is characterized by multiple points, wide range and frequent occurrence, and the superposition of delta and Omicron variants." At the press conference of the joint prevention and control mechanism of the State Council held on February 26, Wu Liangyou, deputy director of the disease control bureau of the National Health Commission, said that the infected people in many places come from closed-loop managers, and the risk of spread is low, but the source of infection in some areas is still under investigation, and there is a risk of spread of the epidemic. It is reported that in the past week, 15 provinces in China reported new locally confirmed cases. How about the opening of schools? What other aspects of the immune barrier need to be strengthened? Relevant experts interpreted it at the meeting. Can schools start as scheduled? The school winter vacation ends and the spring semester begins. Meanwhile, covid-19 pneumonia has been distributed in many places, and the epidemic prevention and control task is heavy. Liu Peijun, deputy director of the Department of sports, health and art of the Ministry of education and first-class inspector, introduced that the Ministry of education has made four unified deployments and put forward four prevention and control requirements to jointly promote the safe opening of schools, the health of teachers, students and employees, and the stability and order of all work in this spring semester. It is reported that at present, except for schools in medium and high-risk areas, most colleges and universities, primary and secondary schools have basically achieved the expected goal of opening schools on schedule and safely. As of February 26, primary and secondary schools in 25 provinces have opened; More than 50 of the 75 universities directly under the Ministry of education have opened. For colleges and universities and primary and secondary schools that have not yet opened, Liu Peijun introduced that the Ministry of education has made a unified deployment for the prevention and control of schools and teachers and students in medium and high-risk areas. The principle is that schools in medium and high-risk areas should postpone the opening of schools, teachers and students in medium and high-risk areas should postpone returning to school, wait for the local epidemic situation to improve significantly and the risk level to be reduced, and then make arrangements to return to school safely and orderly. In terms of the transportation needs of college students who have suspended the opening of school, Zhou Min, deputy director of the emergency office of the Ministry of transport, said: the Spring Festival transportation has ended. Affected by the delayed opening of some schools and other factors, some students and migrant workers have not returned to school and work. On the basis of systematically summarizing the work experience of the Spring Festival transportation, the Ministry of transport will continue to do a good job in the prevention and control of the return epidemic of students and migrant workers, production safety and transportation service guarantee. Re strengthening of immune barrier "During the epidemic period of Omicron strain, the highest peak of reported incidence in a week in the world was close to 24 million, four times that of other variant strains." Wang Huaqing, chief expert of immunization planning of China CDC, quoted who data as saying that in response to Omicron, we should vaccinate the new coronavirus vaccine and strengthen the injection in time. According to statistics, the vaccination rate of the elderly in China is relatively low compared with other groups, but the risk of severe death of the elderly is still very high. A data from the infectious diseases department of the Hong Kong Center for health protection shows that among the patients who died in the early stage, the elderly accounted for the majority, of which the case fatality rate of vaccinated people is only 0.03%, and that of non vaccinated people is 0.54%, with a difference of 18 times. "Vaccination is more important for the elderly." Wang Huaqing suggested that those who meet the conditions should complete the whole process vaccination or booster vaccination as soon as possible. According to reports, China has recently carried out a number of work arrangements to focus on the elderly over the age of 60 and strengthen immunization. Relevant departments have specially conducted all-round training for vaccination related personnel, and put forward clear requirements for vaccination implementation, information registration, medical treatment and so on. In addition, COVID-19 is changing. In order to improve the effectiveness of the current new crown vaccine, China has launched a sequential immunization program to provide people with a variety of options to enhance vaccination. Recently, covid-19 has been widely seen in China. Vaccination is still a key means of epidemic prevention and control. It is urged that eligible people should complete the COVID-19 vaccine as soon as possible, and invite older people over the age of 60, especially those over 80 years old, to take the initiative to vaccinate. Wu Liangyou said. (outlook new era)