Liu Chile, director of Hohhot Center for Disease Control and Prevention. Hohhot Center for Disease Control and Prevention is a public welfare institution with legal personality approved by Hohhot Municipal People's Government, which is mainly responsible for the comprehensive management of infectious disease prevention and control in Hohhot. Immunization prevention for children; Disinfection, vector monitoring and control measures; Prevention and treatment of chronic non-communicable diseases and technical guidance; Monitoring and evaluation of occupational hazards, diagnosis, prevention and control of occupational diseases.