FluView: 2016–2017 Influenza Season: Week 9 ending March 4, 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 9 (February 26-March 4, 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 9 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: Eight influenza-associated pediatric deaths were reported.
  
  • Influenza-associated Hospitalizations: A cumulative rate for the season of 43.5 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 3.6%, which is above the national baseline of 2.2%. Eight of ten regions reported ILI at or above their region-specific baseline levels. 14 states experienced high ILI activity; 12 states experienced moderate ILI activity; eight states experienced low ILI activity; New York City, Puerto Rico, and 16 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 39 states was reported as widespread; Guam and eight states reported regional activity; the District of Columbia and two states reported local activity; one state reported sporadic activity; and the U.S. Virgin Islands reported no activity.
  
  /External_F1709.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:
  9
• Collection(s):
  Stephen B. Thacker CDC Library
• Main Document Checksum:
  urn:sha-512:ed3aad2aeec119d494c496fc207d63d1d3a337cf440cf1ca08731310b66021d6b45ce6fead787824613b78c7a9dec40c671f7fcd18734cea65f97ca1f0cb5222
• Download URL:
  https://stacks.cdc.gov/view/cdc/44558/cdc_44558_DS1.pdf
• File Type:
  [PDF - 1.45 MB ]