FluView : 2012-2013 Influenza Season ; Week 3 ending January 19, 2013
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FluView : 2012-2013 Influenza Season ; Week 3 ending January 19, 2013

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    All data are preliminary and may change as more reports are received.

    Synopsis: During week 3 (January 13-19), influenza activity remained elevated in the United States, but decreased in some areas.

    o Viral Surveillance: Of 11,984 specimens tested and reported by collaborating laboratories, 3,129 (26.1%) were positive for influenza.

    o Pneumonia and Influenza Mortality: The proportion of deaths attributed to pneumonia and influenza (P&I) was above the epidemic threshold.

    o Influenza-Associated Pediatric Deaths: Eight influenza-associated pediatric deaths were reported.

    o Influenza-Associated Hospitalizations: A cumulative rate for the season of 22.2

    laboratory-confirmed influenza-associated hospitalizations per 100,000 population was reported. Of all hospitalizations, 50% were among adults 65 years and older.

    o Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 4.3%; this is above the national baseline of 2.2%. All 10 regions reported ILI above region-specific baseline levels. Twenty-six states and New York City experienced high ILI activity; 14 states experienced moderate activity; 9 states experienced low activity; 1 state experienced minimal activity, and the District of Columbia had insufficient data.

    o Geographic Spread of Influenza: Forty-seven states reported widespread geographic influenza activity; 2 states reported regional activity; the District of Columbia and one state reported local activity; Guam reported sporadic influenza activity, and Puerto Rico and the U.S. Virgin Islands did not report.

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