Avian Flu, Ducks, Rice and GIS

There’s an interesting article in the Proceedings of the National Academy of Sciences published a few weeks ago. The researchers found a strong correlation to ducks and rice fields for the spread of avian flu. I wonder if this suggests closer monitoring of large poultry farms located near rice fields here in Texas would be useful.
Mapping H5N1 highly pathogenic avian influenza risk in Southeast Asia