Long drive home today from Klamath to Lodi. Was nice to get a little AM reception in remote areas. Got NPR and the topic was how a virus spreads. Bird Flu-Swine flu--etc...
According to the expert (dunno name, but very well spoken) most , if not all, come from migratory birds, and then mutate --blood born. The assertion was, that hunters that eviscerate their own game not only carry the biggest risk to themselves, but also are the most likely carriers for transfer. He was asked how is a hunter supposed to handle game. He evaded the question.
Interesting topic. I have seen many hundreds of dead birds due to avian cholera, but the pundit here says that is possibly a different issue.
His thesis was that migratory birds carry the biggest threat to a pandemic spread of some of are most "viral" viruses.
Would like to learn more.