[Purpose/significance] This paper aims to provide a reference for the construction of relevant think tanks by summarizing and analyzing the status quo of think tank services for major public health emergencies at home and abroad.[Method/process] By literature research and website survey, the research investigated the services provided by think tanks for major public health emergencies, including in-depth analysis of 35 key think tanks.[Result/conclusion] The relevant think tank services are classified into three basic types:decision-maker-oriented, professional-and-practitioner-oriented and public-oriented. The research delivers a summary about the commonalities and typical service practice of different think tank services, and points out the gap in themes, contents and forms of think tank services at home and abroad. Finally, the research puts forward the proposals to develop new think tanks with Chinese characteristics for major public health emergencies from three aspects of service design, activity principle and mechanism guarantee.

[Purpose/significance] Taking the field of infectious diseases as an example, this research conducts an in-depth survey about institutional users' information needs for think tanks related to major public health emergencies, and provides decision support for construction of user-centered infectious disease think tanks.[Method/process] Through questionnaires and semi-structured interviews, this study collected the information needs of five types of institutional users, such as government institutions, medical institutions, scientific research institutions, disease control institutions and business institutions. This study used grounded theory to code step by step, and constructed the user information need model for infectious disease think tanks.[Result/conclusion] The model includes three core categories of impact, cognition and realization. The model reflects the barriers to meeting the institutional users' information needs of infectious diseases, users' requirements for information carriers, characteristics, content, and users' functional expectations for the infectious disease think tanks. Accordingly, the study puts forward corresponding countermeasures and suggestions on the construction of infectious disease think tanks in the future.

[Purpose/significance] Through an in-depth analysis of the process of the healthcare data opening and sharing in major public health emergencies, this paper proposes an open governance model of healthcare data with the collaboration participation of multiple subjects for data governance of major public health emergencies in China.[Method/process] By using a combination of literature research and Internet surveys, this study comprehensively reviewed the current research status and existing obstacles of healthcare data opening models for major public health emergencies at home and abroad, and proposed governance solutions from the perspective of solving practical problems.[Result/conclusion] By clarifying the principles of healthcare data opening for major public health emergencies, this study decomposes the process of data opening and sharing, conducts staged governance model of healthcare data opening and sharing under major public health emergencies, and formulates relevant supporting security mechanisms. Finally, this study proposes a practical governance model of healthcare data opening in major public health emergencies.

[Purpose/significance] At the present stage, the data opening of major public health emergencies is faced with many difficulties, such as low public participation, poor data utilization and imperfect platform services. This paper introduces the citizen science mode to build an open service ecosystem, aiming to provide ideas for breaking the deadlock in the development of open data on major public health emergencies.[Method/process] This paper clarified the main elements and implementation processes of citizen science projects in the context of open data on major public health emergencies, and explored the citizen science operation model. On this basis, the study systematically sorted out key elements such as stakeholders, value creation models, constraints and promotion systems. Finally, an open data service ecosystem for major public health emergencies was comprehensively constructed.[Result/conclusion] In this service ecosystem, the citizen science mode is the infrastructure, and the open data platform for major public health emergencies is the key node. By providing all-round service contents, targeted system constraints and promotional mechanisms, this system guides the public, various industry institutions and professionals to interact and cooperate at the levels of macro, meso and micro, integrate their own advantageous resources and carry out service exchange and complementarity, so as to achieve value creation. The results of this paper will help to improve the social participation and utilization of open data, and provide an action reference for the construction of the service system and optimization of the service level of open data platform for major public health emergencies.