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.

Synopsis: During week 49 (December 6-12, 2015), influenza activity increased slightly in the United States but remained low overall.

• Viral Surveillance: The most frequently identified influenza virus type reported by public health laboratories during week 49 was influenza A, with influenza A (H1N1)pdm09 viruses predominating. The percentage of respiratory specimens testing positive for influenza in clinical laboratories was low.

• Novel Influenza A Virus: One human infection with a novel influenza A virus was reported.

• Pneumonia and Influenza Mortality: The proportion of deaths attributed to pneumonia and influenza (P&I) was below their system-specific epidemic threshold in both the NCHS Mortality Surveillance System and the 122 Cities Mortality Reporting System.

• Influenza-associated Pediatric Deaths: No influenza-associated pediatric deaths were reported.

• Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 1.9%, which is below the national baseline of 2.1%. Four of 10 regions reported ILI at or above region-specific baseline levels. One state experienced high ILI activity; Puerto Rico and one state experienced moderate ILI activity; New York City and two states experienced low ILI activity; 46 states experienced minimal ILI activity; and the District of Columbia had insufficient data.

• Geographic Spread of Influenza: The geographic spread of influenza in Guam was reported as widespread; Puerto Rico and two states reported regional activity; 12 states reported local activity; the District of Columbia, the U.S. Virgin Islands, and 33 states reported sporadic activity; and three states reported no influenza activity.

External_F1549.pdf


Subject:
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Disease Outbreaks
Influenza, Human/epidemiology
Influenza A Virus, H2N2 Subtype
Public Health Surveillance

Series:
FluView : 2015-2016 Influenza Season ; Week 49
Document Type:
Newsletter
Place as Subject:
United States
Collection(s):
Stephen B. Thacker CDC Library collection
Main Document Checksum:
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urn:sha256:62a05c7f2d1e7fb11f62334141f51337803006b6c89a13bb2a017bbf39bd30e2
File Type:

Supporting Files

• No Additional Files

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