Background and Aims: Since 1998, Iranian poultry industry has been affected by avian influenza (AI) virus, subtype H9N2. The association of high mortality and case report of H5N1 and H9N2 influenza virus in wild birds in recent years raised the suspicion of a possible new genetic modified AI virus. Methods: Partial nucleotide sequences and deduced amino acid of hemagglutinin (HA) genes of 4 H9...

BACKGROUND Quality of life (QoL) is an important health index for the elderly, necessary for assessing interventions, and prioritising medical and social care needs. As the ageing population in Vietnam continues to increase, understanding important dimensions of QoL for the elderly is essential. There is a paucity of research in this area, however, and the available literature focuses on functi...

conclusions: the recombinant baculovirus constructed in this work has proper characteristics to produce h5n1 influenza virus-like particles in sf9 cells. results: restriction map of pfastbacihnm1 plasmid confirmed the fidelity of the clone. the pcr carried out on the recombinant bacmids as template indicated that a proper homologous recombination has occurred between pfastbacihnm1 donor plasmid...

influenza is an acute respiratory disease caused by the influenza a or b virus. it often occurs in outbreaks and epidemics worldwide, mainly during the winter season. significant numbers of influenza virus particles are present in the respiratory secretions of infected persons, so infection can be transmitted by sneezing and coughing via large particle droplets. the mean duration of influenza v...

influenza c virus possesses specific neuraminate-o-acetylesterase as a receptor-destroying function. this enzymatic activity of the viral glycoprotein hef (hemagglutinin, esterase activity and fusion factor) can be visualized in situ by the use of distinct color substrates. hereby the localization, as well as the quantity of synthesized hef protein is detectable. we further developed the estera...

avian influenza virus (aiv) infection is a major cause of bird or human mortality and morbidity, therefore the rapid identification of the virus is of important clinical and epidemiological implication. methods: a multiplex reverse transcriptase pcr (rt-pcr) was optimized for the detection of influenza a virus and the h5 and h9 subtypes. the influenza type a specific primers were directed to th...

there are many effective chemothereutic agents used in influenza disease which some of them inhibit virus replication by interfering with fluv (influenza virus) viral binding or its penetration into cell membrane. a series of polyoxometalates compounds such as pom-523 and pm-504 have been synthesized and have showed inhibitory effects on viruses. in this study we examined anti influenza activit...

  Although migratory waterfowl is well known to be a major reservoir for avian influenza virus (AIV), there are only few recently published reports about the seroprevalence of AIV in this group of birds. To investigate the AIV antibody status in migratory waterfowl of Iran, we collected 217 serum samples from 25 different species of waterfowl during 2003 and 2004. These serum samples were teste...