PT - JOURNAL ARTICLE AU - Gordon, Steven M. TI - Update on 2009 pandemic influenza A (H1N1) virus AID - 10.3949/ccjm.76a.05009 DP - 2009 Oct 01 TA - Cleveland Clinic Journal of Medicine PG - 577--582 VI - 76 IP - 10 4099 - http://www.ccjm.org/content/76/10/577.short 4100 - http://www.ccjm.org/content/76/10/577.full SO - Cleve Clin J Med2009 Oct 01; 76 AB - The pandemic of a novel strain of swine-origin influenza A (H1N1) is expected to make this a difficult flu season. Fortunately, this strain is relatively mild, and the principles of prevention, diagnosis, and treatment remain the same. Physicians will have a number of complex decisions to make about when to test, when to treat, and when to simply reassure.