Published in TB and Outbreaks Week, January 18th, 2011
"Influenza A (H1N1) 2009 infection was detected in 147(44%) of 334 patients hospitalized for a presumptive influenza related illness. No effect was observed for the 2008-2009 and 2009-2010 seasonal influenza vaccines. However, the pandemic vaccine was associated with an adjusted vaccine effectiveness of 90% (95% CI, 48-100%),"...
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