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The regional percentage of respiratory specimens testing positive for influenza viruses ranged from 0.7% to 5.4%. During the week ending October 4, 122 (61%) of the 199 influenza-positive tests reported to CDC were influenza A viruses and 77 were influenza B viruses. Of the 32 influenza A viruses that were subtyped, all were H3 viruses. ................
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