During the 48^thweek of 2023, there were a total of 86,045 cases of 16 kinds of legal infectious diseases reported, and 6 cases died in Beijing. The top five diseases with a large number of cases are Influenza, COVID-19, Hand, Foot and Mouth Disease, Syphilis, and Viral Hepatitis, accounting for 99.5% of the total number of cases of legal infectious diseases.