FluView: 2011-2012 Influenza Season: Week 11 ending March 17, 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 11 (March 11-17, 2012), influenza activity was elevated in some areas of the United States, but remained relatively low nationally.
  
  • U.S. Virologic Surveillance: Of the 5,088 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, 1,353 (26.6%) 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: Three influenza-associated pediatric deaths were reported and were associated with 2009 H1N1 (2) and influenza B (1) viruses.
  
  • Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 2.4%, which is at the national baseline of 2.4%. Regions 5, 6, 7, 8, and 10 reported ILI at or above region-specific baseline levels. Four states experienced high ILI activity; 5 state experienced moderate ILI activity; 10 states experienced low ILI activity; New York City and 31 states experienced minimal ILI activity, and the District of Columbia had insufficient data to calculate ILI activity.
  
  • Geographic Spread of Influenza: Twenty states reported widespread geographic activity; 20 states reported regional influenza activity; 2 states reported local activity; the District of Columbia, Guam, and 8 states reported sporadic activity, and Puerto Rico and the U.S. Virgin Islands did not report.
  
  External_F1211.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:
  11
• Collection(s):
  Stephen B. Thacker CDC Library
• Main Document Checksum:
  urn:sha-512:dea729bb42df91f5f348adbb504399ea0a905599c0c046df45eab14d061fea9f1c39c9298f622799cf6f9cb1ee02878a40a7bd24865b2d4761d5aa84f5542b47
• Download URL:
  https://stacks.cdc.gov/view/cdc/36111/cdc_36111_DS1.pdf
• File Type:
  [PDF - 538.15 KB ]