FluView: 2017–2018 Influenza Season: Week 3 ending January 20, 2018

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 3 (January 14-20, 2018), influenza activity increased in the United States.
  
  • Viral Surveillance: The most frequently identified influenza virus subtype reported by public health laboratories during week 3 was influenza A(H3). The percentage of respiratory specimens testing positive for influenza in clinical laboratories slightly increased.
  
  • 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: Seven influenza-associated pediatric deaths were reported.
  
  • Influenza-associated Hospitalizations: A cumulative rate of 41.9 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 6.6%, which is above the national baseline of 2.2%. All 10 regions reported ILI at or above region-specific baseline levels. New York City, Puerto Rico, and 39 states experienced high ILI activity; the District of Columbia and five states experienced moderate ILI activity; three states experienced low ILI activity; and three states experienced minimal ILI activity.
  
  • Geographic Spread of Influenza: The geographic spread of influenza in Puerto Rico and 49 states was reported as widespread; Guam reported regional activity; the District of Columbia and one state reported local activity; and the U.S. Virgin Islands reported sporadic activity.
  
  
• Subjects:
  Disease Outbreaks Influenza, Human/epidemiology Public Health Surveillance
• Series:
  FluView
• Document Type:
  Text
• Genre:
  Newsletter ; Statistics
• Place as Subject:
  United States
• Volume:
  2017
• Issue:
  3
• Collection(s):
  Stephen B. Thacker CDC Library
• Main Document Checksum:
  urn:sha-512:79c29d8432c9e9c41f8cf60d5b107a3f7058db93c3fe33e9fcd5e65cd3ed7d3de04330fbc0496eb0c083cacbc9c6f5a0d02a55afd6a2131e1c480be17aaa068b
• Download URL:
  https://stacks.cdc.gov/view/cdc/51131/cdc_51131_DS1.pdf
• File Type:
  [PDF - 677.97 KB ]