Satellite images of nighttime lights help track disease outbreaks
Satellite images of nighttime lights, which normally are used to detect population centers, also can help keep tabs on diseases in developing nations, according to new research. An international research team that includes Matthew Ferrari, an assistant professor of biology at Penn State, found that the new technique accurately indicates fluctuations in population density -- and thus the corresponding risk of epidemic -- that can elude current methods of monitoring outbreaks. The research, reported in the current issue of the journal Science, is expected to help medical professionals to synchronize vaccination strategies with increases in population density. (more)