Dividing the Emergency Department into Red, Yellow, andGreenZonestoControlCOVID-19Infection; aLettertoEd-itor

COVID-19, in certain respects, can be viewed as a CBRN (chemical, biological, radiological, or nuclear) eventdue to being a consequence of SARS-CoV2 virus (the “contaminant”). We, thus, reorganized our emergencydepartment (ED) into 3 distinct zones (red, yellow, and green) for the purpose of infection control. Patients withhigh or medium risk of COVID-19 infection are managed in the red zones. Low-risk patients are managed in theyellow zones. All patients are prohibited to enter the green zones. Green zones are used by healthcare providers(HCPs) for personal protective equipment (PPE) donning, inventory, planning, and dining. Only HCPs who workin the red zones are required to use full level PPE (aerosol precaution). HCPs working in the yellow zones requireless PPE (contact and droplet precaution). No PPE is required in the green zones. Establishing red, yellow, andgreen zones in the ED can be helpful in reducing cross-infections and minimizing demand for PPE.