Missouriwatcher
Editor, Senior Moderator
During week 3 (January 17-23, 2010), influenza activity remained at approximately the same levels this week in the U.S.
* 164 (4.6%) 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 above the epidemic threshold.
* Five influenza-associated pediatric deaths were reported. Four 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 1.7% which is below the national baseline of 2.3%. Two of the 10 regions (Regions 4 and 9) reported ILI equal to their region-specific baseline.
* No states reported widespread influenza activity, five states reported regional influenza activity, Puerto Rico and nine states reported local influenza activity, the District of Columbia, Guam, and 33 states reported sporadic influenza activity, and the U.S. Virgin Islands and three states reported no influenza activity.
During week 3, 8.3% of all deaths reported through the 122-Cities Mortality Reporting System were due to P&I. This percentage was above the epidemic threshold of 7.7% for week 3, and is the second consecutive week that the percentage of P&I deaths has been above the epidemic threshold.
Five influenza-associated pediatric deaths were reported to CDC during week 3 (New York [4] and Wisconsin). Four 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 deaths reported during week 3 occurred between November 8, 2009 and January 2, 2010.
The U.S. Virgin Islands and three states (Idaho, Nebraska, and Oregon) reported no influenza activity.
http://www.cdc.gov/flu/weekly/
* 164 (4.6%) 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 above the epidemic threshold.
* Five influenza-associated pediatric deaths were reported. Four 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 1.7% which is below the national baseline of 2.3%. Two of the 10 regions (Regions 4 and 9) reported ILI equal to their region-specific baseline.
* No states reported widespread influenza activity, five states reported regional influenza activity, Puerto Rico and nine states reported local influenza activity, the District of Columbia, Guam, and 33 states reported sporadic influenza activity, and the U.S. Virgin Islands and three states reported no influenza activity.
During week 3, 8.3% of all deaths reported through the 122-Cities Mortality Reporting System were due to P&I. This percentage was above the epidemic threshold of 7.7% for week 3, and is the second consecutive week that the percentage of P&I deaths has been above the epidemic threshold.
Five influenza-associated pediatric deaths were reported to CDC during week 3 (New York [4] and Wisconsin). Four 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 deaths reported during week 3 occurred between November 8, 2009 and January 2, 2010.
The U.S. Virgin Islands and three states (Idaho, Nebraska, and Oregon) reported no influenza activity.
http://www.cdc.gov/flu/weekly/