Week 17 WV Flu Activity Sporadic

West Virginia has reported influenza activity as “Sporadic” for MMWR week 17 ending Saturday, April 30, 2011. 

There was 1 positive test for influenza A and 2 positive test 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 2 positive tests for influenza A, 0% (0) were influenza A 2009 (H1N1) and 100% (2) were positive for influenza A, H3.  There were no positive tests for influenza B.

There were no confirmed outbreaks of influenza in nursing homes or schools.

Up to date information can be found at the website:

http://www.wvidep.org/tabid/1960/Default.aspx

CDC Synopsis:

During week 17 (April 24-30, 2011), influenza activity in the United States continued to decrease.

• The proportion of deaths attributed to pneumonia and influenza (P&I) was below the epidemic threshold.
• Three influenza-associated pediatric deaths were reported, bringing the season total to 100. One of these deaths was associated with a 2009 influenza A (H1N1) virus, one was associated with an influenza A virus for which the subtype was not determined, and one was associated with an influenza B virus.
• The geographic spread of influenza in two states was reported as regional; the District of Columbia and seven states reported local influenza activity; Puerto Rico and 33 states reported sporadic influenza activity, and the U.S. Virgin Islands, Guam, and eight states reported no influenza activity.

No. of specimens tested	1,901
No. of positive specimens (%)	69 (3.6%)
Positive specimens by type/subtype
Influenza A	36 (52.2%)
A (2009 H1N1)	6 (16.7%)
A (subtyping not performed)	11 (30.6%)
A (H3)	19 (52.8%)
Influenza B	33 (47.8%)