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FluView : 2011-2012 Influenza Season ; Week 2 ending January 14, 2012
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  • Description:
    All data are preliminary and may change as more reports are received.

    Synopsis: During week 2 (January 8-14, 2012), influenza activity in the United States remained relatively low.

    • U.S. Virologic Surveillance: Of the 3,771 specimens tested by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division, 138 (3.7%) were positive for influenza.

    • Pneumonia and Influenza (P&I) Mortality Surveillance: The proportion of deaths attributed to P&I was below the epidemic threshold.

    • Influenza-associated Pediatric Mortality: No influenza-associated pediatric deaths were reported.

    • Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 1.2%, which is below the national baseline of 2.4%. All 10 regions reported ILI below region-specific baseline levels. New York City and all 50 states experienced minimal ILI activity and the District of Columbia had insufficient data.

    • Geographic Spread of Influenza: The geographic spread of influenza in one state was reported as regional; eight states reported local activity; Puerto Rico and 38 states reported sporadic activity, and the District of Columbia, Guam, the U.S. Virgin Islands, and three states reported no influenza activity.


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