As of May 5, 2009, the number of confirmed cases of influenza A (H1N1) is 1,515 with cases occurring in 21 countries. Most cases have occurred in Mexico (822 cases), the United States (403 cases) and Canada (165 cases). Since the Influenza A (H1N1) topic was created on April 25, 2009 (originally Swine influenza), it has been updated multiple times daily as new recommendations are issued and significant changes in the level of the outbreak have been reported. Changes have occurred in case definitions, testing recommendations, antiviral treatment recommendations and travel warnings within guidance documents published by international and national public health authorities. In addition, Influenza A (H1N1) – Clinical Management was created to provide a rapid summary of key clinical management highlights.
For the latest evidence-based influenza-related information available for free, visit www.ebscohost.com/flu.