Clinical Presentation and Epidemiology of Human Pandemic Influenza Virus (H1N1) 2009 on an Alberta Swine Farm

摘要

On May 2n 2009 Canada notified the world that an Alberta swine herd had tested positive for the 2009 H1N1 human pandemic Influenza A virus. It is well established that influenza virus is a zoonotic disease of concern on a global scale presenting economic and health challenges to both human and animal populations (Vincent et al, 2008). World-wide, influenza A virus infections are common in domestic swine herds (Olsen et al, 2000). The transmission of swine influenza virus to humans, both H3N2 and H1N1, has been reported in Canada, the United States, Europe, and Asia (Myers et al, 2007). Although human H3N2 viruses have been isolated from pigs in Asia and Europe, historically there has been varied evidence of human H1N1 influenza viruses maintaining themselves in swine populations (Olsen, 2006).