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FluView : 2014-2015 Influenza Season ; Week 17 ending May 2, 2015
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  • Description:
    Synopsis: During week 17 (April 26-May 2, 2015), influenza activity continued to decrease in the United States.

    o Viral Surveillance: Of 8,269 specimens tested and reported by U.S. World Health Organization (WHO) and National Respira to ry and Enteric Virus Surveillance System (NREVSS) collaborating labora to ries during week 17, 451 (5.5%) were positive for influenza.

    o Novel Influenza A Virus: One human infection with a novel influenza A virus was reported.

    o Pneumonia and Influenza Mortality: The proportion of deaths attributed to pneumonia and

    influenza (P&I) was below the epidemic threshold.

    o Influenza-associated Pediatric Deaths :Three influenza-associated pediatric deaths were


    o Influenza-associated Hospitalizations: A cumulative rate for the season of 64.8

    laboratory-confirmed influenza-associated hospitalizations per 100,000 population was


    o Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness

    (ILI) was 1.4%, which is below the national baseline of 2.0%. All 10 regions reported ILI below region-specific baseline levels. Puer to Rico and one state experienced low ILI activity; New York City and 49 states experienced minimal ILI activity; and the District of Columbia had insufficient data.

    o Geographic Spread of Influenza: The geographic spread of influenza in two states was reported as widespread; Guam and seven states reported regional activity; Puerto Rico and 12 states reported local activity; the District of Columbia and 26 states reported sporadic activity; and the U.S. Virgin Islands and three states reported no influenza activity.

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