US flu activity rises ahead of holiday season

December 19, 2014 11:06 PM

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US flu activity rises ahead of holiday season

With Christmas holiday days away, the nation's flu markers are showing spirited rises, with 29 states reporting widespread activity and the disease affecting nearly all regions, the US Centers for Disease Control and Prevention (CDC) said today.

With the H3N2 virus as the clearly dominant strain, health officials have been closely tracking a mismatch with the strain included in the vaccine, which has now risen to account for 69.4% of the circulating H3N2 viruses, up from 67.5% the week before.

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