The document discusses risk perception of COVID-19 from the perspectives of people and society. It begins by explaining the importance of risk perception in influencing precautionary behaviors during epidemics when treatment is not available. Trust in government and health authorities is important for effective risk communication. Surveys show factors like fear, trust in response measures, and willingness to change behaviors vary across countries and demographics. An integrated causal loop diagram model is proposed to understand how society responds to the COVID-19 crisis through the interplay of various factors like risk perception, trust, media coverage, and government actions.