Researchers, including a University of Florida geographer, have used satellite imagery to study the link between population density and measles. By studying the density of light in cities in Niger, the researchers were able to gauge how population changed during the dry season between September and May, when measles outbreaks are more common. "This method isn't limited to understanding measles -- think about malaria or meningitis. These diseases are geographically specific, for the most part, to areas where this would be a useful technique," said Princeton University's Nita Bharti.
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