FluView: 2016–2017 Influenza Season: Week 4 ending January 28, 2017

Details

• Corporate Authors:
  National Center for Immunization and Respiratory Diseases (U.S.). Influenza Division.
• Description:
  All data are preliminary and may change as more reports are received.
  
  During week 4 (January 22-28, 2017), influenza activity increased in the United States.
  
  • Viral Surveillance: The most frequently identified influenza virus subtype reported by public health laboratories during week 4 was influenza A (H3). The percentage of respiratory specimens testing positive for influenza in clinical laboratories increased.
  
  • Pneumonia and Influenza Mortality: Due to data processing problems, the National Center for Health Statistics (NCHS) mortality surveillance data for the week ending January 14, 2015 (week 2) will not be published this week.
  
  • Influenza-associated Pediatric Deaths: Seven influenza-associated pediatric deaths were reported.
  
  • Influenza-associated Hospitalizations: A cumulative rate for the season of 20.3 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 3.9%, which is above the national baseline of 2.2%. All 10 regions reported ILI at or above their region-specific baseline levels. New York City and 15 states experienced high ILI activity; Puerto Rico and 11 states experienced moderate ILI activity; 14 states experienced low ILI activity; 10 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 and 40 states was reported as widespread; Guam and nine states reported regional activity; the District of Columbia and one state reported local activity; and the U.S. Virgin Islands reported no activity.
  
  External_F1704.pdf
  
  
• Subjects:
  Disease Outbreaks Influenza, Human/epidemiology Public Health Surveillance
• Series:
  FluView
• Document Type:
  Text
• Genre:
  Newsletter ; Statistics
• Place as Subject:
  United States
• Pages in Document:
  17 numbered pages
• Volume:
  2016
• Issue:
  4
• Collection(s):
  Stephen B. Thacker CDC Library
• Main Document Checksum:
  urn:sha-512:3ec604d6ecb560f03b9e96c6ff7d9f217e1479d43b8acbf96b40945c2563ec3e72703cbfad2f89e2578465b8ea8885c95370c8b65ac352cfa844530a65ed521f
• Download URL:
  https://stacks.cdc.gov/view/cdc/44044/cdc_44044_DS1.pdf
• File Type:
  [PDF - 1.14 MB ]