FluView : 2014-2015 Influenza Season ; Week 4 ending January 31, 2015
Published Date:February 6, 2015
Corporate Authors:National Center for Immunization and Respiratory Diseases (U.S.). Influenza Division.
Series:FluView : 2014-2015 Influenza Season ; Week 4
Description:Synopsis: During week 4 (January 25-31, 2015), influenza activity decreased, but remained elevated in the United States.
o ViralSurveillance:Of22,122specimenstestedandreportedbyU.S.WorldHealth Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories during week 4, 3,869 (17.5%) were positive for influenza.
o PneumoniaandInfluenzaMortality:Theproportionofdeathsattributedtopneumoniaand influenza (P&I) was above the epidemic threshold.
o Influenza-associatedPediatricDeaths:Eightinfluenza-associatedpediatricdeathswere reported.
o Influenza-associatedHospitalizations:Acumulativeratefortheseasonof43.5 laboratory-confirmed influenza-associated hospitalizations per 100,000 population was reported.
o OutpatientIllnessSurveillance:Theproportionofoutpatientvisitsforinfluenza-likeillness (ILI) was 4.1%, above the national baseline of 2.0%. All 10 regions reported ILI at or above region-specific baseline levels. Puerto Rico and 26 states experienced high ILI activity; New York City and eight states experienced moderate ILI activity; six states experienced low ILI activity; 10 states experienced minimal ILI activity; and the District of Columbia had insufficient data.
o GeographicSpreadofInfluenza:ThegeographicspreadofinfluenzainPuertoRicoand 40 states was reported as widespread; Guam, the U.S. Virgin Islands, and nine states reported regional activity; and the District of Columbia and one state reported local activity.
Supporting Files:No Additional Files
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