The WHO says the animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world is at animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world from a deadly animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world . They do not know what it looks like. They called it 'Disease X'. It could come from an animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world micro- animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world . Disease X could spread around the world before we know about it. The WHO is putting a animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world of money into animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world . It is preparing a animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world for an outbreak. It said: "Disease X represents the animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world that a serious international animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world could be caused by [an unknown virus]. Disease X could come from many animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world . An existing disease could get animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world ; terrorists could make bio- animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world ; DNA-changing animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world could make totally new viruses. The U.S. Centers for Disease Control and Prevention said: "Scientists estimate that...6 out of animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world 10 known animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world diseases in people are spread from animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world ." Today, people live animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world together and travel the animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world more. This will make it animals closer disease easier epidemic every infectious knowledge lot organism places plan research risk stronger technology unknown weapons world for diseases to spread.