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FluView : 2013-2014 Influenza Season ; Week 47 ending November 23, 2013
  • Published Date:
    December 2, 2013
  • Language:
    English
Filetype[PDF - 480.36 KB]


Details:
  • Corporate Authors:
    National Center for Immunization and Respiratory Diseases (U.S.). Influenza Division.
  • Description:
    Synopsis: During week 47 (November 17-23, 2013), influenza activity increased slightly in the United States.

    o Viral Surveillance: Of 4,996 specimens tested and reported by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories during week 47, 397 (7.9%) were positive for influenza.

    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: No influenza-associated pediatric deaths were reported.

    o Outpatient Illness Surveillance: The proportion of outpatient tvisits for influenza-like illness (ILI) was 1.7%, below the national baseline of 2.0%. Two regions reported ILI at or above region-specific baseline levels. Two states experienced high ILI activity, one state experienced moderate ILI activity, one state experienced low ILI activity, 45 states and New York City experienced minimal ILI activity and the District of Columbia and one state had insufficient data.

    o Geographic Spread of Influenza : geographic spread of influenza in six states was reported as regional; 10 states reported local influenza activity; the District of Columbia, Guam, Puerto Rico, and 32 states reported sporadic influenza activity, and the U.S. Virgin Islands and two states reported no influenza activity.

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