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FluView : 2014-2015 Influenza Season ; Week 50 ending December 13, 2014
  • Published Date:
    December 19, 2014
  • Language:
    English
Filetype[PDF - 1.20 MB]


Details:
  • Corporate Authors:
    National Center for Immunization and Respiratory Diseases (U.S.). Influenza Division.
  • Description:
    Synopsis: During week 50 (December 7-13, 2014), influenza activity continued to increase in the United States.

    o ViralSurveillance:Of20,064specimenstestedandreportedbyU.S.WorldHealth Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories during week 50, 5,200 (25.9%) were positive for influenza.

    o PneumoniaandInfluenzaMortality:Theproportionofdeathsattributedtopneumoniaand influenza (P&I) was below the epidemic threshold.

    o Influenza-associatedPediatricDeaths:Fourinfluenza-associatedpediatricdeathswere reported.

    o Influenza-associatedHospitalizations:Acumulativeratefortheseasonof6.2laboratory- confirmed influenza-associated hospitalizations per 100,000 population was reported.

    o OutpatientIllnessSurveillance:Theproportionofoutpatientvisitsforinfluenza-likeillness (ILI) was 3.7%, above the national baseline of 2.0%. Nine of 10 regions reported ILI at or above region-specific baseline levels. Puerto Rico and 13 states experienced high ILI activity; six states experienced moderate ILI activity; New York City and five states experienced low ILI activity; 26 states experienced minimal ILI activity; and the District of Columbia had insufficient data.

    o GeographicSpreadofInfluenza:ThegeographicspreadofinfluenzainGuamand29 states was reported as widespread; Puerto Rico and 14 states reported regional activity; the District of Columbia, the U.S. Virgin Islands and five states reported local activity; and two states reported sporadic activity.

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