Serological survey on influenza A (H1, H3, H5 and H9) antibodies in human populations in Shanghai, China in 2008 and 2009

摘要

Background: Influenza A is a common respiratory disease in human, and A/H1 and A/H3 are currently co-circulating in the world. Meanwhile, influenza A/H5N1 virus has been spreading throughout South-East Asia and extended to Russia, Europe, Africa, the Indian subcontinent and the Middle East with associated human infections as well as influenza A/H9N2 virus has also caused repeated human infections in Asia since 1998. The periodic serological survey is useful to know the current seroprevalence of human A/H1and A/H3 influenza antibodies in human population and to provide seroepidemiological information of avian H5, H9 influenza A virus infections in humans in Shanghai.