Final Flu Acctivity Report for 2010-2011 Season

This is the Final Flu Activity report for the 2010-11 season. The first weekly influenza surveillance report of the 2011-12 season (week 40, ending October 8, 2011) will be published on October 14, 2011.

West Virginia has reported influenza activity as “No Activity” for MMWR week 20 ending Saturday, May 21, 2011. 

There were no positive tests for influenza A and no positive tests for influenza B reported by hospital and referral laboratories. Only PCR, immunofluorescence and culture results are counted in these totals.

At the Office of Laboratory Services there were no positive tests for influenza A:  H1N1 or H3.  There were no positive tests for influenza B.

There were no outbreaks.

CDC Synopsis:

During week 20 (May 15-21, 2011), influenza activity in the United States remained low.

• The proportion of deaths attributed to pneumonia and influenza (P&I) was slightly above the epidemic threshold.
• No influenza-associated pediatric deaths were reported. This season, 105 laboratory-confirmed influenza-associated pediatric deaths have been reported to CDC.
• The geographic spread of influenza in Puerto Rico and 21 states was reported as sporadic, and the District of Columbia, U.S. Virgin Islands, Guam, and 29 states reported no influenza activity.

No. of specimens tested	1,192
No. of positive specimens (%)	9 (0.8%)
Positive specimens by type/subtype
Influenza A	3 (33.3%)
A (2009 H1N1)	0 (0.0%)
A (subtyping not performed)	2 (66.7%)
A (H3)	1 (33.3%)
Influenza B	6 (66.7%)