FluView: 2013-2014 Influenza Season: Week 43 ending October 26, 2013
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FluView: 2013-2014 Influenza Season: Week 43 ending October 26, 2013

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    Synopsis: During week 43 (Oc to ber 20-26, 2013), influenza activity remained low in the United States.

    o Viral Surveillance: Of 3,241 specimens tested and reported by U.S. World Health Organization (WHO) and National Respiratory and Enteric Virus Surveillance System (NREVSS) collaborating laboratories during week 43, 145 (4.5%) were positive for influenza.

    o Pneumonia and Influenza Mortality: The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.

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

    o Outpatient Illness Surveillance: The proportion of outpatient visits for influenza-like illness (ILI) was 1.2%, below the national baseline of 2.0%. All 10 regions reported ILI below region-specific baseline levels. Three states experienced low ILI activity, 47 states and New York City experienced minimal ILI activity and the District of Columbia had insufficient data.

    o Geographic Spread of Influenza: The geographic spread of influenza in Puerto Rico and one state was reported as regional; 4 states reported local influenza activity; Guam and 30 states reported sporadic influenza activity; 15 states reported no influenza activity, and the District of Columbia and the U.S. Virgin Islands did not report.

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