An update of 2009 influenza A (H1N1) virus / 医学研究生学报

ABSTRACT

Swine influenza A virus belongs to the family of Orthomyxoviridae,which can cause upper respiratory tract infection in swine,avian and human.The influenza A virus that could not be sub-typed was detected from the respiratory tract specimens of patients with influenza-like symptoms in March 2009 in USA and Mexico,followed by identification of a novel swine-origin influenza A (H1N1) virus (S-OIV),which led to an epidemic outbreak in the above two countries and then spread all over the world,causing quite a few deaths.S-OIV differs from other influenza viruses in genotyping,antigenic characteristics,propagating characteristics,pathogenic characteristics and therapies.