FluView: 2011-2012 Influenza Season Week 49 ending December 10, 2011
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FluView: 2011-2012 Influenza Season Week 49 ending December 10, 2011

Filetype[PDF-526.83 KB]


  • English
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    Details:

    • Journal Article:
      FluView
    • Corporate Authors:
      National Center for Immunization and Respiratory Diseases (U.S.). Influenza Division.
    • Description:
      All data are preliminary and may change as more reports are received.

      Synopsis: During week 49 (December 4-10, 2011), influenza activity remained low in the United States.

      • U.S. Virologic Surveillance: Of the 2,480 specimens tested by U.S. World Health

      • Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories and reported to CDC/Influenza Division, 48 (1.9%) were positive for influenza.

      • Pneumonia and Influenza (P&I) Mortality Surveillance: The proportion of deaths

      • attributed to P&I was below the epidemic threshold.

      • Influenza-associated Pediatric Mortality: No influenza-associated pediatric deaths were reported.

      • Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 1.2%, which is below the national baseline of 2.4%. All 10 regions reported ILI below region-specific baseline levels. Two states and New York City experienced low ILI activity, forty-eight states experienced minimal ILI activity, and the District of Columbia had insufficient data.

      • Geographic Spread of Influenza: The geographic spread of influenza in three states was reported as local; Guam, Puerto Rico, and 32 states reported sporadic activity, and the District of Columbia, the U.S. Virgin Islands, and 15 states reported no influenza activity.

      External_F1149.pdf

    • Subjects:
    • Series:
      FluView : 2011-2012 Influenza Season ; Week 49
    • Document Type:
      Webpage
    • Genre:
      Statistics
    • Place as Subject:
      United States
    • Collection(s):
    • Main Document Checksum:
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