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FluView : 2012-2013 Influenza Season ; Week 2 ending January 12, 2013
  • Published Date:
    1/18/13
  • Language:
    English
Filetype[PDF - 964.74 KB]


Details:
  • Corporate Authors:
    National Center for Immunization and Respiratory Diseases (U.S.). Influenza Division.
  • Description:
    As a result of the end of year holidays and elevated influenza activity, some sites may be experiencing longer than normal reporting delays and data in previous weeks are likely to change as additional reports are received.

    Synopsis: During week 2 (January 6-12), influenza activity remained elevated in the United States, but decreased in some areas.

    o Viral Surveillance: Of 12,360 specimens tested and reported by collaborating laboratories, 3,638 (29.4%) were positive for influenza.

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

    o Influenza-Associated Pediatric Deaths: Nine influenza-associated pediatric deaths were reported.

    o Influenza-Associated Hospitalizations: A cumulative rate for the season of 18.8

    laboratory-confirmed influenza-associated hospitalizations per 100,000 population was reported. Among all cases, 49.6% were in adults 65 years and older.

    o Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 4.6%; this is above the national baseline of 2.2%. All 10 regions reported ILI above region-specific baseline levels. Thirty states and New York City experienced high ILI activity; 10 states experienced moderate activity; 7 states experienced low activity; 3 states

    experienced minimal activity, and the District of Columbia had insufficient data.

    o Geographic Spread of Influenza: Forty-eight states reported widespread geographic influenza activity; 2 states reported regional activity; the District of Columbia reported local activity; Guam reported no influenza activity, and Puerto Rico and the U.S. Virgin Islands did not report.

    Date from document properties.

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