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FluView : 2014-2015 Influenza Season ; Week 47 ending November 22, 2014
  • Published Date:
    November 28, 2014
  • Language:
    English
Filetype[PDF - 761.51 KB]


Details:
  • Corporate Authors:
    National Center for Immunization and Respiratory Diseases (U.S.). Influenza Division.
  • Description:
    Synopsis: During week 47 (November 16-22, 2014), influenza activity increased slightly in the United States.

    o Viral Surveillance: Of 9,710 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, 1,228 (12.6%) 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: Four influenza-associated pediatric deaths were reported.

    o Influenza-associated Hospitalizations: A cumulative rate for the season of 1.1 laboratory-confirmed influenza-associated hospitalizations per 100,000 population was reported.

    o Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 2.0%, which is at the national baseline. Four of 10 regions reported ILI at or above region-specific baseline levels. Puerto Rico and one state experienced high ILI activity; two states experienced moderate ILI activity; five states experienced low ILI activity; New York City and 42 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; Puerto Rico and nine states reported regional activity; 20 states reported local activity; the District of Columbia, the U.S. Virgin Islands, and 17 states reported sporadic activity; two states reported no influenza activity; and Guam did not report.

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