FluView : 2010-2011 Influenza Season ; Week 5 ending February 6, 2010
Corporate Authors:National Center for Immunization and Respiratory Diseases (U.S.). Influenza Division.
Series:FluView : 2010-2011 Influenza Season ; Week 5
Description:All data are preliminary and may change as more reports are received.
Synopsis: During week 5 (January 31-February 6, 2010), influenza activity remained at approximately the same levels as last week in the U.S.
• 206 (4.8%) 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 were positive for influenza.
• All subtyped influenza A viruses reported to CDC were 2009 influenza A (H1N1) viruses.
• The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.
• Three influenza-associated pediatric deaths were reported. Two deaths were associated with 2009 influenza A (H1N1) virus infection and one was associated with an influenza A virus for which the subtype was undetermined.
• The proportion of outpatient visits for influenza-like illness (ILI) was 2.1% which is below the national baseline of 2.3%. Three of 10 regions (Regions 4, 7, and 9) reported ILI above region-specific baseline levels.
• No states reported widespread influenza activity, six states reported regional influenza activity, Puerto Rico and 11 states reported local influenza activity, the District of Columbia, Guam, and 28 states reported sporadic influenza activity, four states reported no influenza activity, and the U.S. Virgin Islands and one state did not report.
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