foodconsumer.org: 2009-2010 Influenza Season Week 43 ending October 31, 2009

2009-2010 Influenza Season Week 43 ending October 31, 2009
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admin on 11/08/2009 12:35:00
 
2009-2010 INFLUENZA SEASON WEEK 43 ENDING OCTOBER 31, 2009
All data are preliminary and may change as more reports are received.
SYNOPSIS:
During week 43 (October 25-31, 2009), influenza activity remained elevated in
the U.S.
*5,258 (37.2%) specimens tested by U.S. World Health Organization (WHO) and
National Respiratory and Enteric Virus Surveillance System (NREVSS)
collaborating laboratories and reported to CDC/Influenza Division were positive
for influenza. 	*Over 99% of all subtyped influenza A viruses being reported to
CDC were 2009 influenza A (H1N1) viruses. 	*The proportion of deaths attributed
to pneumonia and influenza (P&I) was above the epidemic threshold.  	*Eighteen
influenza-associated pediatric deaths were reported. Fifteen of these deaths
were associated with 2009 influenza A (H1N1) virus infection and three were
associated with an influenza A virus for which the subtype was undetermined.
	*The proportion of outpatient visits for influenza-like illness (ILI) was above
the national baseline. All 10 regions reported ILI above region-specific
baseline levels. 	*Forty-eight states reported geographically widespread
influenza activity, two states reported regional influenza activity, the
District of Columbia reported local influenza activity; Puerto Rico and Guam
reported sporadic influenza activity, and the U.S. Virgin Islands did not
report.