Re: Fluview 2012-13 Season: Weeks 41-4 (Eight Pediatric Deaths; Total 45)
During week 4 (January 20-26), influenza activity remained elevated in the United States, but decreased in some areas.
Viral Surveillance: Of 10,581 specimens tested and reported by collaborating laboratories, 2,701 (25.5%) were positive for influenza.
Pneumonia and Influenza Mortality: The proportion of deaths attributed to pneumonia and influenza (P&I) was above the epidemic threshold.
Influenza-Associated Pediatric Deaths: Eight pediatric deaths were reported. Five were associated with influenza A (H3) viruses and occurred during weeks 3 and 4 (weeks ending January 19 and 26, 2013), one was associated with an influenza A virus for which the subtype was not determined and occurred during week 4 (week ending January 26, 2013), and two were associated with influenza B viruses and occurred during week 1 (week ending January 5, 2013).
Influenza-Associated Hospitalizations: A cumulative rate for the season of 25.9 laboratory-confirmed influenza-associated hospitalizations per 100,000 population was reported. Of all hospitalizations, more than 50% were among adults 65 years and older.
Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 4.2%; this is above the national baseline of 2.2%. All 10 regions reported ILI above region-specific baseline levels. Twenty-four states and New York City experienced high ILI activity; the District of Columbia and 13 states experienced moderate activity; 4 states experienced low activity; and 9 states experienced minimal activity.
Geographic Spread of Influenza: Forty-two states reported widespread geographic influenza activity; 7 states reported regional activity; the District of Columbia and one state reported local activity; Guam reported sporadic influenza activity, and Puerto Rico and the U.S. Virgin Islands did not report.
During week 4 (January 20-26), influenza activity remained elevated in the United States, but decreased in some areas.
Viral Surveillance: Of 10,581 specimens tested and reported by collaborating laboratories, 2,701 (25.5%) were positive for influenza.
Pneumonia and Influenza Mortality: The proportion of deaths attributed to pneumonia and influenza (P&I) was above the epidemic threshold.
Influenza-Associated Pediatric Deaths: Eight pediatric deaths were reported. Five were associated with influenza A (H3) viruses and occurred during weeks 3 and 4 (weeks ending January 19 and 26, 2013), one was associated with an influenza A virus for which the subtype was not determined and occurred during week 4 (week ending January 26, 2013), and two were associated with influenza B viruses and occurred during week 1 (week ending January 5, 2013).
Influenza-Associated Hospitalizations: A cumulative rate for the season of 25.9 laboratory-confirmed influenza-associated hospitalizations per 100,000 population was reported. Of all hospitalizations, more than 50% were among adults 65 years and older.
Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 4.2%; this is above the national baseline of 2.2%. All 10 regions reported ILI above region-specific baseline levels. Twenty-four states and New York City experienced high ILI activity; the District of Columbia and 13 states experienced moderate activity; 4 states experienced low activity; and 9 states experienced minimal activity.
Geographic Spread of Influenza: Forty-two states reported widespread geographic influenza activity; 7 states reported regional activity; the District of Columbia and one state reported local activity; Guam reported sporadic influenza activity, and Puerto Rico and the U.S. Virgin Islands did not report.
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