miércoles, 24 de febrero de 2010

2009-2010 Influenza Season Week 6 ending February 13, 2010

2009-2010 Influenza Season Week 6 ending February 13, 2010
All data are preliminary and may change as more reports are received.

During week 6 (February 7-13, 2010), influenza activity remained at approximately the same levels as last week in the U.S.

129 (3.5%) 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.
Two influenza-associated pediatric deaths were reported. Both deaths were associated with 2009 influenza A (H1N1) virus infection.
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, three states reported regional influenza activity, Puerto Rico and nine states reported local influenza activity, the District of Columbia and 35 states reported sporadic influenza activity, the U.S. Virgin Islands and three states reported no influenza activity, and Guam did not report.

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