Field epidemiological investigation on COVID-19: Techniques and practice

Combined with field epidemiological investigation guidelines, we optimize related procedures for new coronavirus infection pneumonia (NCIP). In the process of field epidemic investigation, we should use methods like telephone, video and face-to-face interview. During face-to-face interview, we must protect ourselves with secondary protection standard. The two investigators should record the information at the same time and then complement each other. The field investigation of COVID-19 epidemic procedure includes individual investigation, close contact investigation, prevention and control measures, report writing, the epidemic follow-up and the epidemic data archiving. Suggestions for field prevention and control should focus on cutting off transmissions and protecting susceptible people.