How is it that the h1n1 flu virus is a combination of several strains?

PimpBerries’ Ghost asked:


I’ve heard it consists of avian, pig and human flu elements; why is that? And what does this mean? Is it going to mutate to something less forgiving in it’s dormancy during the winter months subtropical?
Somewhere ?? wth ?
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Yeah, I’m feeling like I should board up the shack at any moment dear-
We shall see I suppose..

H1N1 Symptoms