Joint IO Statement on the Flu (The Seeds of World Government?)

Steve Charnovitz has this interesting post at the IELP Blog about a joint statement on the swine A(H1N1) flu virus issued by the FAO, WHO, WTO, and OIE (extra credit to those of you already on to the last one: the World Organization for Animal Health).  Steve quite plausibly challenges the WTO’s authority to make this kind of pronouncement as an example of institutional “mission creep.”.

My question: what are the modalities of coordination among these IOs?  I assume there are standing committees and the like.  We hear a lot about fragmentation among IOs; what about cooperation?  Perhaps this breed of transnational network will end up being more important than the intergovernmental one.