Dr. Sandra Porter of Discovering Biology in a Digital World provides evidence that “the California outbreak might be the same strain that caused an outbreak in 2007 at an Ohio country fair.”
What a nice piece of research and blogging.
UPDATED: There is some interesting discussion on Sandy’s blog about the validity and meaning of this finding, and Tara Smith has further discussion here.
I also want to be more specific about one thing: When I say the word “Source” of Swine Flu in the head line, I mean “phylogenetic source” … the actual source of a person’s case of swine flu is another person (or swine) and the ultimate source is the evolution of viruses. I could have switched this to “origin” but that would be even more geographically meaningful (without meaning for that to be the case) and I could have used the word “ancestor” but that is misleading because of the way viuruses “evolve.” So I’m leaving it as source, and I refer you to this question about geography, which I have asked and which I’m sure will be answered soon enough.