Molecular epidemiology of influenza A infections in swine at agricultural fairs

摘要

The swine-human interface is a critical element in the ecology and epidemiology of influenza A viruses (LAV). Agricultural fairs in the United States create a unique swine-human interface that is conducive to intra- and inter-species IAV transmission.1 Following the unprecedented number of reported variant influenza A infections in humans in the United States during the previous three years, retrospective investigations have implicated the swine-human interface at fairs as the source of virus for thevast majority of the variant influenza A cases.2