WV Flu Avtivity Week 18

West Virginia has reported influenza activity as “No Activity” for MMWR week 18 ending Saturday, May 7, 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 of confirmed influenza activity 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 18 (May 1-7, 2011), influenza activity in the United States continued to decrease.

• The proportion of deaths attributed to pneumonia and influenza (P&I) was at the epidemic threshold.
• Two influenza-associated pediatric deaths were reported, bringing the season total to 102. One of these deaths was associated with a 2009 influenza A (H1N1) virus and one was associated with an influenza A virus for which the subtype was not determined.
• The geographic spread of influenza in one state was reported as regional; two states reported local influenza activity; Puerto Rico, the District of Columbia, and 33 states reported sporadic influenza activity; and the U.S. Virgin Islands, Guam, and 14 states reported no influenza activity.

No. of specimens tested	1,567
No. of positive specimens (%)	29 (1.9%)
Positive specimens by type/subtype
Influenza A	20 (69.0%)
A (2009 H1N1)	2 (10.0%)
A (subtyping not performed)	9 (45.0%)
A (H3)	9 (45.0%)
Influenza B	9 (31.0%