Violence has been recognised officially as a global health issue, with the World Health Organization (WHO) reporting that 1.6 million people die annually from violence. South Africa's injury burden is very high, particularly for homicide, which is six times the global average. The idea of an 'observatory' has expanded recently, from its origins in astronomy to that of specialised informational repositories and knowledge-building centres, housing cross-referenced databases with advanced analytic and research capacities. This review essay provides information regarding the conceptual framework, historical background and various components of the violence observatory model, as well as evidence of effect. The intention is to provide information toCape were greater than the national average for both males and females. In Cape Town, the province's largest city and home to almost twothirds of the provincial population, the highest homicide counts for the period 2015 to 2016 were recorded in the relatively impoverished sub-districts of Nyanga (279 homicides) and Khayelitsha (161 homicides).14 While the criminal justice system remains the primary tool for responding to violence and injury in South Africa, evidence-based interventions for prevention are becoming increasingly influential in the field of public health, assuming a more central role in policymaking. 15 The public health approach to violence and injury prevention consists of three elements: assessing existing conditions; developing interventions; and evaluating programme effectiveness.
16Key to this approach is a surveillance system capable of providing essential information for the assessment phase in order to develop appropriate interventions and programme evaluation methods.
17Injury surveillance is widely recognised as a critical prerequisite for effective injury prevention.Ongoing surveillance can monitor the incidence of injury, identify risk factors and contribute to the planning and evaluation of injury prevention programmes. 18 Furthermore, injury surveillance can comprise a variety of data sources, from mortality and hospital discharge data to emergency department registry data, surveys and police, fire and ambulance records.This review suggests that violence and injury observatories are key to developing interventions that reduce the burden of injury in high-risk communities. We will use the term 'observatory' to denote a surveillance system that collects data from multiple sources, for example crime, clinical and forensic data, whereas injury surveillance systems almost exclusively focus on the use of injury data alone.In this article we will substantiate the following claims:• The observatories model is an internationally accepted tool that can provide a focused understanding of a particular issue or sub theme of violence.• The integration of violence and injury data may allow a comprehensive view of the existing burden of violence and injury within a community.• Observatories allow the opportunity to monitor current and prospective violence and i...