FluView : 2016-2017 influenza season week 49 ending December 10, 2016
Published Date:December 16, 2016
Corporate Authors:National Center for Immunization and Respiratory Diseases (U.S.). Influenza Division.
Series:FluView : 2016-2017 Influenza Season ; Week 49
Description:All data are preliminary and may change as more reports are received.
During week 49 (December 4-10, 2016), influenza activity increased slightly in the United States.
• Viral Surveillance:The most frequently identified influenza virus subtype reported by public health laboratories during week 49 was influenza A (H3). The percentage of respiratory specimens testing positive for influenza in clinical laboratories increased slightly.
• Pneumonia and Influenza Mortality: The proportion of deaths attributed to pneumonia and influenza (P&I) was below the system-specific epidemic threshold in the National Center for Health Statistics (NCHS) Mortality Surveillance System.
• Influenza-associated Pediatric Deaths: No influenza-associated pediatric deaths were reported.
• Influenza-associated Hospitalizations: A cumulative rate for the season of 1.7 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 1.9%, which is below the national baseline of 2.2%. Two regions reported ILI at or above their region-specific baseline levels. Puerto Rico experienced high ILI activity, one state experienced moderate ILI activity, New York City and four states experienced low ILI activity, 45 states experienced minimal ILI activity, and the District of Columbia had insufficient data.
• Geographic Spread of Influenza:The geographic spread of influenza in Puerto Rico was reported as widespread; Guam, the U.S. Virgin Islands, and seven states were reported as regional; the District of Columbia and 22 states reported local activity; 20 states reported sporadic activity; and one state reported no activity.
Supporting Files:No Additional Files
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