[National Administration for Disease Control and Prevention: The risk of epidemics of common infectious diseases in schools such as influenza has increased] On September 3, the National Administration for Disease Control and Prevention held a press conference today with the theme of "Scientific Disease Prevention to Start the School Season and Healthy Escort for the New Semester." Xi Jingjing, spokesperson of the National Administration of Disease Control and Prevention, briefed on the recent analysis of the epidemic situation of key infectious diseases and health risk warnings. With the heat of summer and autumn, the seasons change, and the epidemic situation of infectious diseases changes accordingly. The vector Aedes mosquito continues to be active in southern provinces, and mosquito-borne infectious diseases such as dengue fever and chikungunya are still in epidemic season. The national COVID-19 epidemic has been declining for three consecutive weeks, the influenza epidemic has fluctuated at a low epidemic level, and the epidemic of enteric infectious diseases has generally been at a low level. At the same time, we have now entered the golden autumn school season, and many students are returning to school. Affected by factors such as the concentration of personnel, environmental changes, and work and rest adjustments, the risk of common infectious diseases in schools such as influenza, norovirus infection, and hand, foot, and mouth disease has increased.