Simulating COVID-19 Spreads in Indoor Space

It is known that the transmissibility of COVID-19 is higher in indoor space than outdoor. The fact that the indoor space is usually closed and has less factors to take into account than outdoor may facilitate the analysis of COVID-19 infection. However, few works have been done on the analysis on COVID-19 transmissibility in indoor space. In this paper, we discuss simulation methods to analyze the transmissibility in indoor space, particularly a simulation environment consisting of three components; indoor maps, positions and trajectories of persons in indoor space, and infection models of COVID-19 in indoor space. And we analyze the requirements and design issues of each component. Among three COVID-19 infection models, we developed a simulation tool for indoor person-person infection model. While only the person-person infection model has been implemented for the simulation, the other two models of COVID-19 are planned to be designed and implemented in the future.