During week 8 (February 21-27, 2010), influenza activity remained at approximately the same levels as last week in the U.S.
* 263 (6.4%) 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.
* Over 99% of 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.
* One influenza-associated pediatric death was reported and was associated with an influenza B virus infection. This death occurred during the 2008-09 influenza season.
* The proportion of outpatient visits for influenza-like illness (ILI) was 1.7% which is below the national baseline of 2.3%. Two of 10 regions (Regions 4 and 9) reported ILI above region-specific baseline levels.
via CDC – Seasonal Influenza (Flu) – Weekly Report: Influenza Summary Update.