Satellites will join search for source of Ebola virus   A health worker wearing protective clothing carries blankets towards the Ebola isolation ward, seen in the background, in Makemba, north eastern Gabon on Friday, Dec. 28, 2001. Ebola is one of the most deadly known viral diseases, killing 50 to 90 percent of those who become infected. Gabon-based researchers are going to use ESA-supplied satellite data to map the jungles where Ebola makes its home in unprecedented detail, with the aim of tracking down its as-yet unknown source.   A rare silverback mountain gorilla moves across dense, wet undergrowth. Like other apes, this endangered species also falls victim to Ebola. But by plotting where infected animals are found against a detailed map based on ESA-supplied satellite data, investigators hope to get closer to discovering the mystery jungle host that carries the deadly virus.   An aedes aegypti mosquito is shown on human skin in a file photo, date and location not known, from the U.S Department of Agriculture. Release date: 22 June 2004