Transmission risk analysis of SARS-CoV-2 in air conditioning systems of Terminal 3 of Xi’an Xianyang International Airport

The airport terminal is the top priority of the SARS-CoV-2 prevention and control. This paper presents the air conditioning system of Terminal 3 of Xi’an Xianyang International Airport briefly. The relationship between SARS-CoV-2 transmission characteristics and air conditioning system is analysed and the infection risk is calculated by the Wells-Riley model. The results show that the infection risk in the international arrival area is less than 1%, and the infection risk in the international waiting area is less than 2%. It is concluded that the probability of SARS-CoV-2 transmission caused by the air conditioning system of Xi’an Xianyang International Airport is extremely small.