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FluView: 2011-2012 Influenza Season: Week 19 ending May 12, 2012

Public Domain
File Language:
English


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 19 (May 6-12, 2012), influenza activity declined nationally and in most regions, but remained elevated in some areas of the United States.

    o U.S. Virologic Surveillance: Of the 2,171 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, 288 (13.3%) were positive for influenza.

    o Pneumonia and Influenza (P&I) Mortality Surveillance: The proportion of deaths attributed to P&I was below the epidemic threshold.

    o Influenza-Associated Pediatric Mortality: Two influenza-associated pediatric deaths were reported. One was associated with an influenza B virus and 1 was associated with an influenza A virus for which the subtype was not determined.

    o 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 regions reported ILI below region-specific baseline levels. Two states experienced low ILI activity; New York City and 47 states experienced minimal ILI activity, and the District of Columbia and 1 state had insufficient data to calculate ILI activity.

    o Geographic Spread of Influenza: One state reported widespread geographic activity; 5 states reported regional influenza activity; 11 states reported local activity; the District of Columbia, Guam, Puerto Rico, and 30 states reported sporadic activity, and the U.S. Virgin Islands and 3 states reported no influenza activity.

  • Subjects:
  • Series:
    FluView
  • Document Type:
    Text
  • Genre:
  • Place as Subject:
    United States
  • Pages in Document:
    13 numbered pages
  • Volume:
    2011
  • Issue:
    19
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:01dff6068a0444df7ddea2c6b56ebfbf8ee2512722a3e644c13ceaf8158ab7f8e24b3d033085ad17b8a09d4bade4e287e2153273cfb4bcb03169f2467dd81e79
  • Download URL:
  • File Type:
    Filetype[PDF - 628.29 KB ]
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