title: [Molecular genetic evolution analysis of new A(H1N1) influenza virus].
abstract: In order to analyze the molecular epidemiology of A (H1N1) influenza virus in 2009, the complete genome sequences of influenza strains from different host sources downloaded from the NCBI were analyzed on genetic evolution by DNAstar software in this research. The results showed that 79 mutation sites of new A (H1N1) influenza virus were observed compared to previous human A (H1N1) influenza strain, including 14 mutation sites new in all A (H1N1) influenza sources and 37 mutation sites only observed in swine strain. A significant difference was represented in antigenic sites between new A (H1N1) influenza strain and the previous human A (H1N1) strain. This phenomenon shows the new A (H1N1) influenza strain is either originated from the recombination of human and swine strain or from the infection in pig populations and gradual mutation to human tansmission, which remains to be further studied.
authors.affiliation: College of Animal Science and Medicine, Inner Mongolia Agriculture University, Hohhot 010018, China. nmlizhao@126.com
authors.forename: Li
authors.initials: L
authors.lastname: Zhao
authors.forename: Yong-Hong
authors.initials: YH
authors.lastname: Liu
authors.forename: Yue-Huan
authors.initials: YH
authors.lastname: Liu
authors.forename: Feng-Long
authors.initials: FL
authors.lastname: Wang
authors.forename: Jian
authors.initials: J
authors.lastname: Lin
authors.forename: Chun-Hua
authors.initials: CH
authors.lastname: Han
authors.forename: Ming
authors.initials: M
authors.lastname: Ma
authors.forename: Yu-Lin
authors.initials: YL
authors.lastname: Ding
authors.forename: Xu-Na
authors.initials: XN
authors.lastname: Ding
authors.forename: Jin-Ling
authors.initials: JL
authors.lastname: Wang
authors.forename: Long-Feng
authors.initials: LF
authors.lastname: Yang
authors.forename: Jie
authors.initials: J
authors.lastname: Pan
authors.forename: Jing-Wen
authors.initials: JW
authors.lastname: Han
mesh_terms: D000818:Animals; D001717:Birds; D030561:Databases, Nucleic Acid; D019143:Evolution, Molecular; D019267:Hemagglutinin Glycoproteins, Influenza Virus / Q000145:classification / Q000235:genetics*; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000235:genetics*; D005585:Influenza in Birds / Q000821:virology; D007251:Influenza, Human / Q000821:virology; D009976:Orthomyxoviridae Infections / Q000662:veterinary / Q000821:virology; D010802:Phylogeny; D013552:Swine; D013553:Swine Diseases / Q000821:virology
chemical_list: D019267:Hemagglutinin Glycoproteins, Influenza Virus