FluView : 2017-2018 influenza season week 14 ending April 7, 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 14 (April 1-7, 2018), influenza activity decreased in the United States.
  
  • Viral Surveillance: Overall, influenza A(H3) viruses have predominated this season. Since early March, influenza B viruses have been more frequently reported than influenza A viruses. 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 below the system-specific epidemic threshold in the National Center for Health Statistics (NCHS) Mortality Surveillance System.
  
  • Influenza-associated Pediatric Deaths: Nine influenza-associated pediatric deaths were reported.
  
  • Influenza-associated Hospitalizations: A cumulative rate of 101.6 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 2.1%, which is below the national baseline of 2.2%. Six of 10 regions reported ILI at or above region-specific baseline levels. Two states experienced high ILI activity; two states experienced moderate ILI activity; 11 states experienced low ILI activity; and New York City, the District of Columbia, Puerto Rico, and 35 states experienced minimal ILI activity.
  
  • Geographic Spread of Influenza: The geographic spread of influenza in seven states was reported as widespread; Guam, Puerto Rico and 22 states reported regional activity; the District of Columbia and 16 states reported local activity; and the U.S. Virgin Islands and five states reported sporadic activity.
  
  
• Subjects:
  Disease Outbreaks Influenza, Human/epidemiology Influenza A Virus, H2N2 Subtype Public Health Surveillance
• Series:
  FluView
• Document Type:
  Newsletter
• Genre:
  Statistics
• Place as Subject:
  United States
• Pages in Document:
  17 numbered pages
• Volume:
  2018
• Issue:
  14
• Collection(s):
  Stephen B. Thacker CDC Library
• Main Document Checksum:
  urn:sha-512:c33ce6153f1f3503ada01576e65885dde87ed5c4527a146aa0c674b9442ca0bda077f7bbd25a44b33f1501a3f7420751a92d3e7bdcd011e327dc8caefae109ba
• Download URL:
  https://stacks.cdc.gov/view/cdc/53420/cdc_53420_DS1.pdf
• File Type:
  [PDF - 725.86 KB ]