Epidemiologic mapping using the "kriging" method: application to an influenza-like illness epidemic in France.

This paper presents the application of a technique from the earth sciences, the "kriging" method, to the field of geographic epidemiology. Both the principles of the method and the basic equations are given. A key advantage of the method is that it relies on an analysis of the spatial variability of the data and allows the representation of the variable under study as a continuous process throughout a country. Application of the kriging method to the geographic distribution of an epidemic of influenza-like illness in France is discussed.