Why didn't Yanji Prevention and Control Center answer the phone?

Eat, go to the bathroom. The prevention and control center didn't answer the phone, which may be because the staff didn't answer when they were on duty, or they went to the bathroom for a short time. China Center for Disease Control and Prevention (hereinafter referred to as China CDC) is a public welfare organization organized by the government to implement national disease control and public health technical management and services.