FluView: 2011-2012 Influenza Season: Week 13 ending March 31, 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 13 (March 25-31, 2012), influenza activity was elevated in some areas of the United States, but declined nationally and in most regions.
  
  • U.S. Virologic Surveillance: Of the 4,551 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, 932 (20.5%) 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: One influenza-associated pediatric death was reported and was associated with an influenza A virus for which the subtype was not determined.
  
  • Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 1.7%, which is below the national baseline of 2.4%. All regions reported ILI below region-specific baseline levels. Six states experienced low ILI activity; New York City and 44 states experienced minimal ILI activity, and the District of Columbia had insufficient data to calculate ILI activity.
  
  • Geographic Spread of Influenza: Ten states reported widespread geographic activity; 19 states reported regional influenza activity; 13 states reported local activity; the District of Columbia, Guam, Puerto Rico, and 8 states reported sporadic activity, and the U.S. Virgin Islands reported no influenza activity.
  
  External_F1213.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:
  13
• Collection(s):
  Stephen B. Thacker CDC Library
• Main Document Checksum:
  urn:sha-512:f0089737ff7d593775c6abca61001c99cd7c3e381cec86f21bede568c1356cc6c9e7549115d2b3f3fb2f7712b1759e136437e025c2473ed5b8aa9552002c63ca
• Download URL:
  https://stacks.cdc.gov/view/cdc/36113/cdc_36113_DS1.pdf
• File Type:
  [PDF - 611.30 KB ]