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FluView : 2014-2015 Influenza Season ; Week 14 ending April 11, 2015
  • Published Date:
    April 17, 2015
  • Language:
    English
Filetype[PDF - 1.78 MB]


Details:
  • Corporate Authors:
    National Center for Immunization and Respiratory Diseases (U.S.). Influenza Division.
  • Description:
    Synopsis: During week 14 (April 5-11, 2015), influenza activity continued to decrease in the United States.

    o Viral Surveillance: Of 11,189 specimens tested and reported by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories during week 14, 1,076 (9.6%) 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: No influenza-associated pediatric deaths were reported.

    o Influenza-associated Hospitalizations: A cumulative rate for the season of 62.4 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 1.8%, which is below the national baseline of 2.0%. Three regions reported ILI at or above region-specific baseline levels. Puerto Rico and six states experienced low ILI activity; New York City and 44 states experienced minimal ILI activity; and the District of Columbia and the U.S. Virgin Islands had insufficient data.

    o Geographic Spread of Influenza: The geographic spread of influenza in three states was reported as widespread; Guam and 14 states reported regional activity; the District of Columbia and 19 states reported local activity; and Puerto Rico, the U.S. Virgin Islands, and 14 states reported sporadic activity.

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