Global health, as a field of study, research, and practice, has grown in prominence over the past two decades. This chapter sets out what "global health" is and outlines key principles and core concepts of relevance for the field. It goes on to

Background:Timely strategic information is essential for decision makers to mount an effective public health response to infectious disease outbreaks, and public health actors must find an effective way to supply it. The Centre for International Health Protection at the Robert Koch Institute (Germany’s national public health institute) developed a three-pronged approach to processing and supplying strategic information on the international state of the COVID-19 pandemic to the German Federal Ministry of Health: monitoring and analysis of international public health and social measures (PHSM); screening, validating, analysing and reporting the global epidemiological situation; and in-depth analyses and syntheses of COVID-19 evidence. Aims and objectives:We discuss the approach taken by the Centre to provide strategic information and challenges and adaptations during the information provision process. We then distil lessons that will be critical to improve strategic information provision for evidence-informed decision making in future public health emergencies. Key conclusions:Several lessons can be derived from the Centre’s experience. Timeliness of evidence is essential for enabling decision makers to tailor a public health response to an outbreak, and requires sufficient and skilled staff to process evidence. Evidence formats should be adapted to decision makers’ information needs; this requires open channels of communication to understand needs. Access to high-quality international data hinges on data sharing across countries and the capacity to collect and process such data in many countries. Heeding the lessons will strengthen pandemic response.

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