On February 2, 2022, the Beijing Winter Olympic Games and the Winter Paralympics were held safely as scheduled, as the Omicron variant strain of the Coronavirus was sweeping the world. Earlier, under the guidance of the Guangzhou Laboratory, the team of the National Center for Respiratory Medicine of the First Affiliated Hospital of Guangzhou Medical University independently developed a “risk evaluation system for the spread of the pandemic in a large-scale event” with the support of the key project of “Winter Olympic Games Supported by Science and Technology”, the “risk evaluation and prevention technology for the Beijing Winter Olympic Games under the impact of the pandemic”. Taking the “Ice Cube” close-loop competition venue as an example, the multi-agent system (MAS) is applied to simulate and infer the spread mechanism of the pandemic in a microscopic scene. The system has established a highly accurate database of scenarios and behaviors based on specific factors such as 3D modeling of the venue, role of the crowd, streamline planning, regional control measures, and schedule of the events. The system can intelligently infer the development trend of the pandemic and the time-space relationship of the agents and analyze and verify the time-space risk factors of the pandemic spread under various prevention and control policies, thereby providing a scientific and powerful analytical tool for the relevant pandemic prevention and control departments for the Winter Olympic Games.

On the basis of the aforesaid risk evaluation system, the team has also established an accurate transmission chain reconstruction model to trace and analyze the multiple sources of viruses, and provide important technical support for the traceability of Coronavirus in the Winter Olympic Games.

An acceptance conference of experts was held for the special project of “Winter Olympic Games Supported by Science and Technology”, where the research fruit was recognized by the experts unanimously and received a letter of thanks from the leading group of the special project. The team of the National Center for Respiratory Medicine of the First Affiliated Hospital of Guangzhou Medical University is composed of experts and scholars from Guangzhou Laboratory, Guangzhou Institute of Respiratory Health and Macau University of Science and Technology, including professor Yang Zifeng, professor Zheng Jingping, Dr. Zeng Zhiqi with Guangzhou Laboratory and Guangzhou Institute of Respiratory Health, and associate professor Han Zitian and Dr. Tang Jiale with Macau University of Science and Technology.‍

Figure 1 Simulation and deduction of the pandemic transmission scenario in the Ice Cube Stadium

Figure 2 Simulation and deduction of the pandemic transmission scenario in the event of curling

Figure 3 The team of the Ministry of Science and Technology in charged of the special project sends a letter of thanks to the member organizations of the project team

Figure 4 The team of the Ministry of Science and Technology in charge of the special project sends a letter of thanks to the head of the project team