FluView : 2015-2016 Influenza Season ; Week 4 ending January 30, 2016
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FluView : 2015-2016 Influenza Season ; Week 4 ending January 30, 2016

Filetype[PDF-1.13 MB]


  • English

  • Details:

    • Journal Article:
      FluView
    • Description:
      All data are preliminary and may change as more reports are received.

      Synopsis: During week 4 (January 24-30, 2016), influenza activity increased slightly in the United States.

      • Viral Surveillance: The most frequently identified influenza virus type reported by public health laboratories during week 4 was influenza A, with influenza A (H1N1)pdm09 viruses predominating. The percentage of respiratory specimens testing positive for influenza in clinical laboratories increased.

      • Pneumonia and Influenza Mortality: The proportion of deaths attributed to pneumonia and influenza (P&I) was below their system-specific epidemic threshold in both the NCHS Mortality Surveillance System and the 122 Cities Mortality Reporting System.

      • Influenza-associated Pediatric Deaths: Two influenza-associated pediatric deaths were reported.

      • Influenza-associated Hospitalizations: A cumulative rate for the season of 2.6 laboratory-confirmed influenza-associated hospitalizations per 100,000 population was reported.

      • Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 2.2%, which is above the national baseline of 2.1%. Six of 10 regions reported ILI at or above region-specific baseline levels. Puerto Rico experienced high ILI activity; two states experienced moderate ILI activity; New York City and 11 states experienced low ILI activity; 37 states experienced minimal ILI activity; and the District of Columbia had insufficient data.

      • Geographic Spread of Influenza: The geographic spread of influenza in Puerto Rico and three states was reported as widespread; Guam and 18 states reported regional activity; the District of Columbia and 16 states reported local activity; the U.S. Virgin Islands and 12 states reported sporadic activity; and one state reported no activity.

      External_F1604.pdf

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