Researchers from the Centers for Disease Control and Prevention are using PDA software and GPS navigation systems to collect data on homes in Nigeria that have bed nets treated with insecticides. Without such equipment, data collection took researchers weeks to compile. They now spend about a day collecting the information.
http://www.ihealthbeat.org/articles/2007/9/12/Researchers-Tap-GPS-PDAs-For-Malaria-Prevention.aspx
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