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FluView : 2015-2016 Influenza Season ; Week 47 ending November 28, 2015
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Published Date:
December 4, 2015
Series:FluView : 2015-2016 Influenza Season ; Week 47Language:English
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Description:All data are preliminary and may change as more reports are received. Synopsis: During week 47 (November 22-28, 2015), influenza activity increased slightly in the United States but remained low overall. • Viral Surveillance: The most frequently identified influenza virus type reported by public health laboratories during week 47 was influenza A viruses, with influenza A (H3) viruses predominating. The percentage of respiratory specimens testing positive for influenza in clinical laboratories was low. • Pneumonia and Influenza Mortality: The proportion of deaths attributed to pneumonia and influenza (P&I) was below their system-specific epidemic threshold in both the NCHS Mortality Surveillance System and the 122 Cities Mortality Reporting System. • Influenza-associated Pediatric Deaths: No influenza-associated pediatric deaths were reported. • Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 1.9%, which is below the national baseline of 2.1%. Three of 10 regions reported ILI at or above region-specific baseline levels. Puerto Rico and two states experienced moderate ILI activity; four states experienced low ILI activity; New York City and 44 states experienced minimal ILI activity; and the District of Columbia had insufficient data. • Geographic Spread of Influenza: The geographic spread of influenza in Guam was reported as widespread; Puerto Rico reported regional activity; seven states reported local activity; the District of Columbia, the U.S. Virgin Islands, and 38 states reported sporadic activity; and five states reported no influenza activity. External_F1547.pdf
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