FluView: 2011-2012 Influenza Season: Week 12 ending March 24, 2012

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 12 (March 18-24, 2012), influenza activity was elevated in some areas of the United States, but remained relatively low nationally.
  
  • U.S. Virologic Surveillance: Of the 4,624 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, 908 (19.6%) 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: Four influenza-associated pediatric deaths were reported and were associated with 1 2009 H1N1 and 3 influenza A viruses for which the subtype was not determined.
  
  • Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 2.0%, which is below the national baseline of 2.4%. Regions 5 and 10 reported ILI above region-specific baseline levels. Three states experienced moderate ILI activity; 6 states experienced low ILI activity; New York City and 41 states experienced minimal ILI activity, and the District of Columbia had insufficient data to calculate ILI activity.
  
  • Geographic Spread of Influenza: Sixteen states reported widespread geographic activity; 21 states reported regional influenza activity; 9 states reported local activity; the District of Columbia, Guam, Puerto Rico, and 4 states reported sporadic activity, and the U.S. Virgin Islands reported no influenza activity.
  
  External_F1212.pdf
  
  
• Subjects:
  Disease Outbreaks Influenza, Human/epidemiology Influenza A Virus, H2N2 Subtype Public Health Surveillance
• Series:
  FluView
• Document Type:
  Text
• Genre:
  Newsletter ; Statistics
• Place as Subject:
  United States
• Pages in Document:
  13 numbered pages
• Volume:
  2011
• Issue:
  12
• Collection(s):
  Stephen B. Thacker CDC Library
• Main Document Checksum:
  urn:sha-512:efa5503452e2b4e1501350a3095f4dce5a20841137b6753d709bc80e22958af9b5fb09699e04c8f87880eef19e57585909c76d7ec4da0e8cc497d10be8886d6a
• Download URL:
  https://stacks.cdc.gov/view/cdc/36112/cdc_36112_DS1.pdf
• File Type:
  [PDF - 614.21 KB ]