Emergency science communication is an important emergency activity that can enhance public safety awareness and risk perception ability, optimize health-protective behaviors, and reduce losses from emergencies. Certainly, emergency science communication needs to be multisource information and cross-organization. Moreover, increasing cooperation in emergency science communication is the key to improving the effectiveness of science communication in public health emergencies. To clarify the cooperation relationships among emergency organizations in emergency science communication, emergency science communication cooperation networks (ESCCNs) are constructed on the basis of the social network analysis method, and the practice of emergency science communication in response to COVID-19 in China is taken as the case. Through an interpretation of the characteristics of ESCCNs in the emergency response phase and the ongoing emergency phase, the differences in the cooperation modes of public health emergencies in different phases are analyzed. Moreover, the influence of different emergency phases on the formation of the ESCCN of the whole phase is discussed. With the evolution of the emergency phase, the network tightness, equilibrium and connectivity of the ESCCN all tend to increase, whereas network agglomeration decreases. In the emergency response phase, the core-edge features of the ESCCN are obvious, and emergency science communication organizations (ESCOs) are more inclined to form emergency science communication cooperation with other ESCOs of the same type. However, in the ongoing emergency phase, the cooperation relationships between ESCOs are more balanced, and more diversified cross-group cooperation relationships are formed. The diversification of ESCO types, the closeness of ESCO relationships and the connectivity of ESCCNs are the main factors that promote the formation of the ESCCN of the whole phase. Furthermore, implications for strengthening the efficiency of science popularization cooperation in public health emergencies are proposed in connection to matching dynamic characteristics, optimizing resource allocation and strengthening institutional guarantees.

The new situations, problems, and challenges facing urban fire safety work are gradually increasing in China, so innovating urban fire safety governance modes is an urgent task. In the fire management practice of the Chinese government, the establishment of an urban fire safety co-management system is an important measure for aggregating fire safety management resources and improving the level of urban fire safety prevention, as well as control. In order to reveal and clarify the interacting relationships and influencing mechanisms among multiple subjects in an urban fire safety co-management system, we constructed an urban fire safety co-management game model comprising fire supervision departments, production management units, and the public based on evolutionary game theory. The stability of the urban fire safety co-management game system is explored from the perspective of game subjects. The influencing factors of strategy selection between game subjects in the game system were investigated using numerical simulation analysis. The research results show that elevating the informatization level of co-management, the risk perception level of the public, and the disclosure level of fire safety information are conducive to stimulating the public’s positivity to participate in co-management. Strengthening the accountability of the superior government is conducive to ensuring the supervision level of fire supervision departments. The above measures have positive value for optimizing China’s urban fire safety co-management systems, establishing urban fire safety management synergy, and ensuring the stability of social fire safety situations.

Vaccination is the key to interrupting the transmission of viruses, reducing public health losses, and improving the efficiency of public health emergency management. The implementation of vaccination requires communication between the government and the public, and the participation of multiple subjects. Strengthening the coordination of multiple subjects in the process of vaccination can improve the vaccination rate and broaden its scope. Therefore, from the perspective of inter-organizational interaction, a public health emergency vaccination game model based on health management departments, vaccinologists, and the public was constructed in this study. With the objective of improving the effectiveness of vaccination, the influential factors in a public health emergency vaccination game system and game subjects’ strategy selection were explored using a numerical simulation analysis. The research results showed that the range of vaccination, the diversification of vaccination information release, the level of emergency coordination between health management departments and vaccinologists, and the public’s awareness of emergency protection can all effectively promote vaccination. Among them, the effects of vaccination range (δ) and the diversification of vaccination information release (φ) on game subjects’ strategy selection fluctuated, but did not affect the overall trend. Both the level of emergency collaboration (θ) and public safety awareness (ε) can enhance the initiative of game subjects to participate in vaccination. When the stable strategy combination formed by the game system are positive promotion strategy, active guidance strategy and active vaccination strategy, the convergence rate of health management departments and vaccinologists to form a stable strategy is greater than that of the public. Further, the implications of promoting the effective implementation of vaccination are put forward via improving the vaccination strategy, strengthening vaccination collaboration, mobilizing the enthusiasm of vaccinologists, and enhancing the initiative of the public.