Global and Local Persistence of Influenza A(H5N1) Virus
نویسندگان
چکیده
An understanding of the global migration dynamics of highly pathogenic avian influenza A(H5N1) virus is helpful for surveillance and disease prevention. To characterize the migration network of this virus, we used genetic analysis, which supported a global persistence model in which each of 9 regions acts to some extent as a source. Siberia is the major hub for the dispersal of the virus. Southeast Asia and Africa are major sources of genetically and antigenically novel strains. We found evidence of local persistence of the virus in Southeast Asia and Africa, which is rare for human influenza A viruses. The differences in migration dynamics between avian and human influenza viruses might help with the design of region-specific surveillance efforts and the selection of vaccine candidates.
منابع مشابه
Expression of HA1 antigen of H5N1 influenza virus as a potent candidate for vaccine in bacterial system
The impending influenza virus pandemic requires global vaccination to prevent large-scale mortality and morbidity, but traditional influenza virus vaccine production is too slow for rapid responses. In this study, bacterial system has been developed for expression and purification of properly folded HA1 antigen as a rapid response to emerging pandemic strains. Here, a recombinant H5N1 (A/Indone...
متن کاملMortality of wild swans associated with naturally infection with highly pathogenic H5N1 avian influenza virus in Iran
In the February 2006 in two wetlands in northern Iran, the mortality among wild swans was observed. Paralysis was the most prominent feature of the disease. Histologically, diffused necrosis of acinar cells in pancreas, degeneration and necrosis of some neurons in central nervous system (CNS), sever necrotic and hemorrhagic enteritis, foci of haemorrahge and myocardial cell necrosis in the he...
متن کاملContinual Antigenic Diversification in China Leads to Global Antigenic Complexity of Avian Influenza H5N1 Viruses
The highly pathogenic avian influenza (HPAI) H5N1 virus poses a significant potential threat to human society due to its wide spread and rapid evolution. In this study, we present a comprehensive antigenic map for HPAI H5N1 viruses including 218 newly sequenced isolates from diverse regions of mainland China, by computationally separating almost all HPAI H5N1 viruses into 15 major antigenic clu...
متن کاملDesigning of A Multi-epitope Recombinant Protein, Consisting of Several Conserved Epitopes from Hemagglutinin Protein of the H1N1 and H5N1 Strains of Influenza Virus by Immunoinformatics Approaches
Introduction: According to marked advances in bioinformatics studies, development of influenza vaccines has been greatly modified in many studies. In this study, we have designed a multi-epitope recombinant protein, consisting of several conserved epitopes from Hemagglutinin protein of the H1N1 and H5N1 strains of Influenza virus by immunoinformatics approaches. Materials and Methods: The regis...
متن کاملBacillus subtilis as a Host for Recombinant Hemagglutinin Production of the Influenza A (H5N1) Virus
Abstract Background and Aims: Influenza A(H5N1) viruses circulating in animals might evolve and acquire the ability to spread from human to human and thus start a pandemic. Hemagglutinin (HA) has been shown to play a major role in binding of influenza virus to its target cell and the main neutralizing antibody responses elicit against this region. Recent studies have shown that...
متن کامل