Abstract

This study investigates the potential transmission routes of tracer gas within temporary negative pressure isolation (TNPI) rooms, which were converted from typical wards in response to the COVID-19 pandemic. By employing field measurements and CONTAM simulations, the study explores various scenarios to analyze the potential pathways of aerosol transmission. The examination of tracer gas concentration and airflow patterns reveals that imbalances and intricate airflow dynamics exist between TNPI wards, adjacent rooms, bathrooms, and hallways, thus serving as potential sources of contamination. These findings underscore the necessity for a comprehensive analysis and the implementation of preventive measures during the conversion of wards into TNPI rooms, ultimately aiming to prevent the spread of infections. With an enhanced model, this study also aims to develop of effective strategies in preventing the transmission of diseases in the future