jaue2019-057: Analysis of Airborne and Droplet Infection Bacteria Distribution According to Interzonal Pressure Difference by Plan Type of Outpatient Department at Medium-Sized Hospitals

Abstract

Data and field surveys were conducted on medium hospitals that specialize in respiratory diseases (internal 
medicine, otolaryngology, family medicine, pediatrics) in D city. The plan types of waiting room, outpatient 
department and treatment room were classified into integrated type and corridor type. The airborne and droplet 
infection bacteria distribution was compared by plan type according to the interzonal pressure differences of 
waiting room and outpatient department. In the existing state with no interzonal pressure difference in integrated 
type and corridor type, airborne and droplet infection bacteria generated in the outpatient department and waiting 
room will stagnate without spreading, thus increasing the probability of infection. However as in Case-2, if the 
infection bacteria move to places with fewer visitors by using interzonal pressure difference, the probability of 
hospital infection will become low. In particular, the hospital infection probability will decrease further if, the 
corridor type is expected to lower the infection probability when the infection bacteria are moved to places with 
shorter residence type using the interzonal pressure difference.