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FluView : 2016-2017 influenza season week 10 ending March 11, 2017
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March 17, 2017
[PDF-1.50 MB]
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Description:During week 10 (March 5-11, 2017), influenza activity decreased, but remained elevated in the United States.
• Viral Surveillance: The most frequently identified influenza virus subtype reported by public health laboratories during week 10 was influenza A (H3). The percentage of respiratory specimens testing positive for influenza in clinical laboratories decreased.
• Pneumonia and Influenza Mortality: The proportion of deaths attributed to pneumonia and influenza (P&I) was above the system-specific epidemic threshold in the National Center for Health Statistics (NCHS) Mortality Surveillance System.
• Influenza-associated Pediatric Deaths: Five influenza-associated pediatric deaths were reported.
• Influenza-associated Hospitalizations: A cumulative rate for the season of 46.9 laboratory-confirmed influenza-associated hospitalizations per 100,000 population was reported.
• Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 3.7%, which is above the national baseline of 2.2%. Seven of ten regions reported ILI at or above their region-specific baseline levels. 18 states experienced high ILI activity; seven states experienced moderate ILI activity; five states experienced low ILI activity; New York City, Puerto Rico, and 20 states experienced minimal ILI activity; and the District of Columbia had insufficient data.
• Geographic Spread of Influenza: The geographic spread of influenza in 36 states was reported as widespread; Guam, Puerto Rico and 11 states reported regional activity; the District of Columbia and three states reported local activity; and the U.S. Virgin Islands reported no activity.
External_F1710.pdf
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