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.