نتایج جستجو برای: influenza virus
تعداد نتایج: 431493 فیلتر نتایج به سال:
background: the h9n2 subtype of avian influenzaviruses (aivs) have spread in asia and middle east countriesand have become a serious threat to poultry industry in iran.objectives:characterization of genes of h9n2 subtype involvingin pathogenicity and diagnosis are crucial in control of avianinfluenza outbreaks. the nonstructural (ns) gene and its proteinproducts (ns1 & ns2) are important as...
respiratory failure is a serious complication of h1n1 influenza that, if not properly managed, can cause death. when mechanical ventilation is not effective, the only way to save the patient’s life is extracorporeal membrane oxygenation (ecmo). a prolonged type of cardiopulmonary bypass, ecmo is a high-cost management modality compared to other conventional types and its maintenance requires sk...
background: influenza a virus is the most virulent human pathogen and causes the most serious problem. having epidemiological knowledge about this disease is important. the aim of this study was to determine the prevalence of influenza a/h3n2 virus infection in northern iran from 2011 to 2013 using the real-time polymerase chain reaction (rt-pcr). methods: in this cross-sectional study 57 sampl...
BACKGROUND Defining dispersal of influenza virus via aerosol is essential for the development of prevention measures. METHODS During the 2010-2011 influenza season, subjects with influenza-like illness were enrolled in an emergency department and throughout a tertiary care hospital, nasopharyngeal swab specimens were obtained, and symptom severity, treatment, and medical history were recorded...
New coronavirus as a pandemic threatens whole world. This virus as a member of coronavirus family has new and unknown characteristics and no vaccine or treatment agent has been developed for this infectious disease. Regarding the successful experience of public health measures in SARS outbreak controlling and haltering, the infected countries have applied these proceedings widely to control new...
In 2015, a novel influenza A(H1N1) virus was isolated from a boy in China who had severe pneumonia. The virus was a genetic reassortant of Eurasian avian-like influenza A(H1N1) (EA-H1N1) virus. The hemagglutinin, neuraminidase, and matrix genes of the reassortant virus were highly similar to genes in EA-H1N1 swine influenza viruses, the polybasic 1 and 2, polymerase acidic, and nucleoprotein ge...
Influenza A virus is a negative RNA stranded virus of the family Orthomyxoviridae, and represents a major public health threat, compounding existing disease conditions. Influenza A virus replicates rapidly within its host and the segmented nature of its genome facilitates re-assortment, whereby whole genes are exchanged between influenza virus subtypes during replication. Antiviral medications ...
introduction: the preparation of seasonal influenza virus vaccines and especially its large-scale production requirement after the emergence or reemergence of a pandemic will need an alternative host cell system due to current suboptimal methods and the insufficiency of embryonated chicken eggs needed for producing them. in response to the vital and increasing demand for alternative means for in...
Summary The performance of an in-house protocol for virus detection on commercialized electrostatic wipes (EWs) was assessed experimentally by impregnating them with suspensions cytomegalovirus, adenovirus, and influenza virus, determining the recovery efficiency, repeatability, limit protocol. sensitive enough to detect 4 log10 gene copies virus. At room temperature, RNA stable EWs at least fo...
While influenza A viruses comprise a heterogeneous group of clinically relevant influenza viruses, influenza B viruses form a more homogeneous cluster, divided mainly into two lineages: Victoria and Yamagata. This divergence has complicated seasonal influenza vaccine design, which traditionally contained two seasonal influenza A virus strains and one influenza B virus strain. We examined the di...
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