The threat of a global outbreak of bird flu makes it urgent for the international community to cooperate effectively. Wealthy countries will have to provide hundreds of millions of dollars for the testing and production of medicines unnecess ary for treating patients suffering from bird flu. Developing countries, (1) ______ particularly in Southeast Asia, which the bird flu virus has spread since 1997, must (2) ______ work out special programs so that farmers will not hide signs of possible out-breaks. However, the way such farm birds as chickens and ducks are traditionally (3) ______ raised and marketed in the developed world should be changed; there should (4) ______ be more distance between the birds and their keepers. Countries should deal in (5) ______ the disease with joint effort. The potential effects of a national breakout of bird flu are enormous. Firstly , the breakout may kill large numbers of people. Secondly, such an outbreak (6) ______ may cause great political damage. The latest outbreak of bird flu has cost Southeast (7) ______ east Asia more than $10 billion. If a new outbreak of bird flu were to last for a whole year, $ 800 billion would be lost. Despite the 124 human cases and 63 deaths from bird flu since December 2003, the virus remains mainly a disease of animals. However, the more animals that die the disease, the more chances it has of spreading to people. Large (8) ______ numbers of dead pr dying birds mean that more people will be exposing to the virus, (9) ______ which will change into a virus with new characteristics. If the international community works together efficiently, man can surely prevent from such a virus and (10) ______ possibly save millions of lives.