Integrated regional data collection activities are increasingly being carried out in relation to environmental indices and health outcomes. These include remote sensing of environmental data and formal networks collecting standardized health data (such as WHO's European infectious disease monitoring system and multinational networks for certain specific diseases).
The European region exhibits several characteristics that can enhance the informativeness of regional epidemiological research: (1) a broad variety of environmental conditions, including gradients in geography, climate, culture and socioeconomic conditions; (2) a variety of diseases occurring in diverse environments; studies of infectious diseases in relation to climatic influences could focus, for instance, on leishmaniasis around the Mediterranean, tick-borne encephalitis in Scandinavia and central Europe, and waterborne infectious diseases in countries throughout Europe; (3) the distribution of malaria vectors in Europe and population dynamics in relation to climate; and (4) pre-existing regional networks for the recording of certain diseases. Capitalizing on these research opportunities within the European region will strengthen the information base for policy-making.