A coupel of years back i wrote a webpage on the potential H5N1 pandemic threat. It includes a number of links to some of the worlds forem,ost authorities on the Flu A threat and I post a link to that old page here for anyone interested.
H5N1 - Information and Resources
Hope it is of some help.
The threat is serious but we are considerably better prepared thamn before. Interesting times indeed.
Cheers,
Brad