RT Journal Article SR Electronic T1 The resurgence of swine-origin influenza A (H1N1) JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 337 OP 343 DO 10.3949/ccjm.76a.09047 VO 76 IS 6 A1 Sherif Beniameen Mossad YR 2009 UL http://www.ccjm.org/content/76/6/337.abstract AB Unexpectedly, swine-origin influenza A (H1N1) virus (S-OIV, informally known as swine flu) appeared in North America at the very end of the 2008–2009 influenza season and began to spread internationally. As the world mobilizes for a potential pandemic, this article summarizes the developments in diagnosis, treatment, and prevention.