Week 15 WV Flu activity remains Sporadic

West Virginia has reported influenza activity as “Sporadic” for MMWR week 15 ending Saturday, April 16, 2011.

 

There were 6 positive tests for influenza A and 3 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 4 positive tests for influenza A, 0% (0) were influenza A 2009 (H1N1) and 100% (4) were positive for influenza A, H3.  There were no positive tests for influenza B.

There was one outbreak of confirmed influenza activity in a nursing home.

Up to date information can be found at the website:

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

CDC Synopsis:

During week 15 (April 10-16, 2011), influenza activity in the United States continued to decrease.

• The proportion of deaths attributed to pneumonia and influenza (P&I) has been at or above the epidemic threshold for 12 consecutive weeks.
• Four influenza-associated pediatric deaths were reported, bringing the season total to 95. One of these deaths was associated with 2009 influenza A (H1N1) virus and three deaths were associated with an influenza B virus.
• The geographic spread of influenza in five states was reported as regional; 20 states reported local influenza activity; the District of Columbia, Guam, Puerto Rico, and 24 states reported sporadic influenza activity, and the U.S. Virgin Islands and one state reported no influenza activity.

No. of specimens tested	2,972
No. of positive specimens (%)	201 (6.8%)
Positive specimens by type/subtype
Influenza A	127 (63.2%)
A (2009 H1N1)	17 (13.4%)
A (subtyping not performed)	31 (24.4%)
A (H3)	79 (62.2%)
Influenza B	74 (36.8%)