Fig. 3. The coronavirus disease surveillance protocol in the ED.

KTAS = Korean Triage and Acuity Scale, EP = emergency physician, PPE = personal protective equipment, COVID-19 = coronavirus disease 2019, NPIR = negative-pressure isolation room, CXR = chest X-ray, ED = emergency department, BT = body temperature.

^aKTAS: 1, immediate resuscitation; 2, very urgent; 3, urgent; 4, standard; and 5, non-urgent; ^bRisk factors: epidemic history, history of clustering, contact with high risk exposure.