Weekly U.S. Influenza Surveillance Report

The CDC Influenza Division collects, compiles, and analyzes information on Influenza activity year-round in the US and produces FluView, a weekly influenza surveillance report. During week 47, ending November 26, New York and 48 states experienced minimal activity. Georgia and Oklahoma experienced low activity; Puerto Rico experienced high activity.

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Weekly U.S. Influenza Surveillance Report

Full report also available as PDF

2016-2017 Influenza Season Week 47 ending November 26, 2016

Synopsis:

During week 47 (November 20-26, 2016), influenza activity increased slightly, but remained low in the United States.

Viral Surveillance: The most frequently identified influenza virus subtype reported by public health laboratories during week 47 was influenza A (H3). The percentage of respiratory specimens testing positive for influenza in clinical laboratories increased slightly, but remained low.
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: No influenza-associated pediatric deaths were reported.
Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 1.8%, which is below the national baseline of 2.2%. Three regions reported ILI at or above their region-specific baseline levels. Puerto Rico experienced high ILI activity, one state experienced moderate ILI activity, New York City and five states experienced low ILI activity, 44 states experienced minimal ILI activity, and the District of Columbia had insufficient data.
Geographic Spread of Influenza:The geographic spread of influenza in Guam, Puerto Rico, the U.S. Virgin Islands, and one state was reported as regional; 12 states reported local activity; the District of Columbia and 36 states reported sporadic activity; and one state reported no activity.