HEWS offers these users a wider, real-time perspective of events and how to manage them. It integrates knowledge of a particular threat or disease and brings it to remote areas, even if they are in an extreme state of disorder. It helps with logistical support and reduces the need to carry large amounts of heavy equipment to trouble spots.
HEWS works by setting up a communication network via satellite to survey and monitor risk indicators. It allows communication between teams in the field and with command centres. Data from many locations can be collected, stored and processed. It can then be quickly analysed and distributed to the users who need it the most. HEWS is an open platform, built using a modular approach, so the widest variety of users can implement it.
What will make HEWS critical to disaster relief agencies is that it is satellite based. Disasters may disrupt or even destroy local infrastructure - but satellites are immune to their effects.
The system will be tested in two different exercise scenarios, one African and one European. In the first, a suspected case of an infectious disease is reported. Field teams will be deployed by the local Ministry of Health, international organisations and NGOs. The scenario will require them to assess the current situation and deploy a mobile laboratory. Based on field reports, a practice emergency will be declared. HEWS will provide real-time reporting from the various locations and provide insight into how the epidemic is developing. A response will then be organised and feedback provided to mobile teams on road access, water, food, drugs, and medical disposables.
The second scenario simulates a terrorist attack in the centre of a European capital. The resulting confusion leads to traffic jams and saturation of the mobile telephone network. The work of the many civil protection and health operators, who are all entering the scene at the same time, is hindered by a lack of co-ordination and field information, particularly on decontamination measures and treatment protocols. HEWS will give civil protection authorities the ability to supply this information and co-ordinate the field teams correctly.
HEWS is the work of a consortium of three companies, Instituto Nacional de Saúde and Tekever S.A., both from Portugal, and Ridgeback s.a.s. from Italy. The project is co-financed by ESA as part of the Health and Telemedicine via Satellite Programme. More news on the European Space Agency can be found in the VMW April 2007 article Telemedicine initiative for sub-Saharan Africa to propose pilot projects.