Is epidemic more regional or local? Where pandemic is more global?
Probably yes. Probably yes. I think you know that is still active research not in our lab work. But sort of more epidemiologically orientated labs where they really want to figure out what triggers a new epidemic, or particularly a pandemic. So one still does not understand that in full detail. What are the natural reservoirs for the subtypes of influenza? There are, if we classify say by the influenza hemagglutinin, for example, there are I believe 13 sub types, maybe 14. We have talked mostly so far about H1, H2 and H3 which are the first three, and they are the major ones that are occur in humans. But many of these other subtypes occur in other animals. Some in pigs, in swine. Some in horses, there is a horse flu. All of them actually occur in birds. In a variety of birds. Chickens, ducks and so on. So the birds are actually the largest reservoir of these different sub types of flu. Man has some of these sub types like H4 and the higher H’s have never crossed into man. If they carry
