Wired publishes an article tracing the H1N1 flu to American pig farms...um...
"On Wednesday, Columbia University biomedical informaticist Raul Rabadan added new information on the virus’ family history in a posting to ProMed, a public health mailing list. His description paralleled that of other researchers who had analyzed the new strains, but with an extra bit of detail. Six of the genes in swine flu looked to be descended from “H1N2 and H3N2 swine viruses isolated since 1998.”
Experts contacted by Wired.com agreed with Rabadan’s analysis. For researchers who track the evolution of influenza viruses, the news was chilling.
H3N2 — the letters denote specific gene variants that code for replication-enhancing enzymes — is the name of a hybrid first identified in North Carolina in 1998, the tail end of a decade which saw the state’s hog production rise from two million to 10 million, even as the number of farms dropped. H3N2 originated in a relatively benign swine flu strain first identified in 1918, but had absorbed new genes from bird and human flus."
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