FluView: 2010-2011 Influenza Season: Week 9 ending March 5, 2011

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 9 (February 27-March 5, 2011), influenza activity in the United States decreased.
  
  • Of the 7,556 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, 1,869 (24.7%) were positive for influenza.
  
  • The proportion of deaths attributed to pneumonia and influenza (P&I) was above the epidemic threshold for the sixth consecutive week.
  
  • Five influenza-associated pediatric deaths were reported bringing the season total to 60. Three of these deaths were associated with an influenza B virus and two were associated with an influenza A virus for which the subtype was not determined.
  
  • The proportion of outpatient visits for influenza-like illness (ILI) was 3.1%, which is above the national baseline of 2.5%. Eight of the 10 regions (Regions 1, 2, 3, 4, 5, 7, 8 and 10) reported ILI at or above region-specific baseline levels. Ten states experienced high ILI activity; 12 states experienced moderate ILI activity; nine states experienced low ILI activity; 19 states and New York City experienced minimal ILI activity, and the District of Columbia had insufficient data.
  
  • The geographic spread of influenza in 39 states was reported as widespread; nine states reported regional influenza activity; the District of Columbia and two states reported local influenza activity; Guam and the U.S. Virgin Islands reported sporadic influenza activity, and Puerto Rico did not report.
  
  External_F1109.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:
  14 numbered pages
• Volume:
  2010
• Issue:
  9
• Collection(s):
  Stephen B. Thacker CDC Library
• Main Document Checksum:
  urn:sha-512:14d63a683e79e714a4bdc19d0c309896891e041935136fc7ddc6e583b3c7f03e3db8110a40dd92f9c3fcff86b57185c18f3d06da8bab8a0524e9ff561386af2a
• Download URL:
  https://stacks.cdc.gov/view/cdc/37063/cdc_37063_DS1.pdf
• File Type:
  [PDF - 746.33 KB ]