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FluView : 2013-2014 Influenza Season ; Week 12 ending March 22, 2014
  • Published Date:
    March 28, 2014
  • Language:
    English
Filetype[PDF - 1.30 MB]


Details:
  • Corporate Authors:
    National Center for Immunization and Respiratory Diseases (U.S.). Influenza Division.
  • Description:
    Synopsis: During week 12 (March 16-22, 2014), influenza activity continued to decrease in the United States.

    o ViralSurveillance:Of4,977specimenstestedandreportedduringweek12byU.S.World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories, 571 (11.5%) were positive for influenza.

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

    o Influenza-associatedPediatricDeaths:Fourinfluenza-associatedpediatricdeathswere reported.

    o Influenza-associatedHospitalizations:Aseason-cumulativerateof31.1laboratory- confirmed influenza-associated hospitalizations per 100,000 population was reported.

    o OutpatientIllnessSurveillance:Theproportionofoutpatientvisitsforinfluenza-likeillness (ILI) was 1.6%, which is below the national baseline of 2.0%. Four of 10 regions reported ILI at or above region-specific baseline levels. One state and New York City experienced moderate ILI activity; two states experienced low ILI activity; 47 states experienced minimal ILI activity, and the District of Columbia had insufficient data.

    o GeographicSpreadofInfluenza:Thegeographicspreadofinfluenzainfourstateswas reported as widespread; Guam and seven states reported regional influenza activity; the District of Columbia and 17 states reported local influenza activity; Puerto Rico and 22 states reported sporadic influenza activity, and the U.S. Virgin Islands did not report.

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