Many of these viruses cause severe clinical outcomes in human and animal populations, the results of which can be. Hantavirus pulmonary syndrome hps and the workplace april, 2010 transmission infected rodents shed the virus through urine, droppings, and saliva. Guide to baculovirus expression vector systems bevs and. When comparing the bunyavirus l protein with a linear concatenation of the three influenza virus polymerase subunits in the order papb1pb2, similarities in the domain architecture and functional domain motifs, that is, the location of endonuclease and rdrp domains, can be detected. The structural, metabolic, genetic and immunological features of organisms in each. Hps is transmitted through a process called aerosolization. Save powerpoint presentations as pdf files office support. The viral rnadependent rna polymerase lprotein is responsible for replication and transcription of the viral rna, but apart from its central polymerase domain, it is poorly characterized. The name bunyavirales derives from bunyamwera, where the original type species bunyamwera orthobunyavirus was first discovered. Author summary bunyaviruses are a large family of rna viruses that include serious human, animal and plant pathogens. This study revealed a genetic relationship between bunyaviruses from australia and pathogenic bunyaviruses found elsewhere in the world, indicating emergence potential. Regarding ssrnas, there are two major sequence possibilities. Polio virus from the hogle lab at harvard, url unknown. Poxviruses flaviviruses env bornaviruses env hepadnaviruses.
Sandfly fever is prevalent in many regions including the countries in the mediterranean basin, northern africa, the middle east. In others, tranovarial transmission is thought to play a dominant role in virus maintenance. Download the ppt file and save it to your computer. Uukuniemi virus helps to explain infection mechanism of. The presence of virus in infected cell cultures can be detected by hemagglutination. Ictv study groups, consisting of leading experts in the. Click create pdf xps document, then click create pdf xps. The family bunyaviridae consists of more than 350 assigned viruses, making it one of the largest taxonomic groupings of rna viruses 1.
The appearance of antibody, either natural or passively administered, is associated with the disappearance of virus from the blood. Causes of viral encephalitis herpes viruses hsv1, hsv2, varicella zoster virus, cytomegalovirus, epsteinbarr virus, human herpes virus 6 adenoviruses influenza a enteroviruses, poliovirus measles, mumps, and rubella viruses rabies arboviruses examples. Bunyaviruses are sensitive to the action of interferon, so this response may play a protective role. Appendix reduction in the incidence of certain diseases after the introduction of vaccination. Bunyaviridae is a family of arthropodborne or rodentborne, spherical, enveloped rna viruses.
Select the pdf file you want to convert to powerpoint. Proliferation of infected b cells results in massive activation and proliferation of t c cells cd8 cells characteristic lymphoid hyperplasia. More recent field isolates indicate that the described viruses are currently circulating, demonstrating the value of exploring archival collections. Bunyavirus, any virus belonging to the family bunyaviridae. Pdf converter is a online webbased document to pdf converter software.
Orthobunyavirus, phlebovirus, nairovirus, hantavirus, and tospovirus tospoviruses infect only plants. Arthropodborne viruses arboviruses are viruses that can be transmitted to man by arthropod vectors the who definition viruses that are maintained in nature principally, or to an important extent, through biological transmission between susceptible vertebrate host by hematophagous arthropods or through transovarian and possibly venereal transmission in. Our online pdf to powerpoint converter is the best available, and you can use it free. Bunyaviruses have enveloped virions virus particles that are about 80120 nm 1 nm 10. Arenavirus infections are relatively common in humans in some areas of the world and can cause severe illnesses. Remaining uploaded pdf or ppt files will be deleted automatically. The large lsegment of the genome encodes the viral rnadependent rna polymerase rdrp, the medium msegment encodes two surface glycoproteins gn and gc, and the small ssegment encodes the viral nucleoprotein n. Bunyaviruses are responsible for a number of febrile diseases in. Saving your presentation as a pdf lets anyone view it, even if they dont have powerpoint. The arenaviridae are a family of viruses whose members are generally associated with rodenttransmitted diseases in humans. Bunyavirales is an order of negativesense singlestranded rna viruses. The essential reference of clinical virology virology is one of the most dynamic and rapidly changing fields of clinical medicine. Cultured human macrophage infected with brucella melitensis. The capsnatching mechanism of bunyaviruses, however, has to be somehow different from that of influenza.
Convert and create pdf from various types of files like word doc, excel xls, powerpoint ppt. Ppt viral hemorrhagic fevers powerpoint presentation. Hemagglutination inhibition test is widely used for the diagnosis of infection caused by orthomyxoviruses influenza, paramyxoviruses measles, mumps, mononucleosis, abrovirusestogaviruses including rubella, flaviviruses, and bunyaviruses. In the publish as pdf or xps dialog box, choose a location to save the file to. Investigating uukuniemi virus, a bunyavirus of the genus phlebovirus, we found that virus attachment to the cell surface was specific but inefficient, with 25% of bound viruses. Elliott the screen versions of these slides have full details of and acknowledgements 1 1 richard m. Aerosolization occurs when dried materials contaminated by. When you save presentation as a pdf file it freezes the formatting and layout. Viral hemorrhagic fever japan pdf ppt case reports. Papovaviruses picornaviruses bunyaviruses env papillomaviruses arenaviruses env filoviruses env parvoviruses togaviruses env coronaviruses env herpesviruses env calcivirusesastroviruses.
Bunyaviruses are enveloped viruses with a tripartite, negative sense, singlestranded rna genome. Ppt viral encephalitis powerpoint presentation free to. International committee on taxonomy of viruses ictv. Genetic characterization of archived bunyaviruses and. Our pdf to powerpoint converter will turn your pdf into ppt in seconds. Arthropod borne diseases malaria anopheles mosquito yellow fever aedes mosquito dengue fever aedes mosquito encephalitis aedesculexfleas epidemic typhus body louse bubonic plague flea. The bunyavirus genome is made up of three segments large, medium, and small containing singlestranded. Hantavirus pulmonary syndrome hps and the workplace.
Many of the images in the smallpox part of this file come from fenner, henderson, arita et al. Genera bunyaviruses phlebovirus nairovirus uukuvirus hantavirus. The gout eraser is a short, to the point guide on how to reverse gout symptoms without ever leaving your home. Author summary segmented negative strand viruses snsv such as influenza, lassa or hantaan viruses are responsible for a large number of severe human infectious diseases.
Bunyaviruses and climate change clinical microbiology and infection. The guide goes into extensive detail on exactly what you need to do to safely, effectively and permanently get rid of gout, and you are guaranteed to see dramatic improvements in days if not hours. All carry out transcription by the capsnatching mechanism, which requires the action of a. Viral hemorrhagic fever vhfs is a general term to severe group of illness caused by rna viruses from several viral families. The role of cellmediated immunity has not been fully evaluated. However, early bunyavirushost cell interactions and entry mechanisms remain largely uncharacterized. This document is fact sheet pp212, one of a series of. People can view the slides even if they dont have powerpoint, but they cant make changes to it.
The family bunyaviridae is a large and diverse group of enveloped viruses with ribonucleic acid rna genomes. At least 7 groups 19 viruses and 22 ungrouped viruses. It was formerly known as bunyaviridae family of viruses. Uukuniemi virus helps to explain infection mechanism of bunyaviruses the uukuniemi virus is the first bunyavirus whose structure researchers have been able to determine. Bunyaviruses, with the exception of hantaviruses, are thought to be transmitted in nature by arthropods.
The ictv report is a freely available, online resource, that updates and replaces previous ictv reports that had been available as printed books. Bunyaviruses and climate change clinical microbiology. Bunyaviruses are spherical or pleomorphic, enveloped viruses with diameters in the range of 80120 nm. Koray ergunay, in emerging infectious diseases, 2014. Genomic characterisation of three mapputta group viruses, a. Gan gan and trubanaman viruses almost perfectly matched 2 recently isolated, purportedly novel viruses, salt ash and murrumbidgee viruses. General characteristics, structure and taxonomy of viruses. Clinical virology 4th edition pdf free books download. It is generally accepted that the planet is undergoing climatic changes, and climate change has become the scapegoat for many catastrophes, including infectious disease outbreaks, as acknowledged by randolph and ergonul, who state climate change is the current ubiquitous explanation for increased incidence of infections of many sorts future virology 2008. The starting point for the current report also previously referred to as the online, 10th report is the ictv 9th report, published in 2011. No file size restrictions, no ad watermarks just a free online tool for creating pdfs from your ppt slides. The bunyaviridae are a very large family of singlestrand, enveloped rna viruses more than 300 viruses and consists of five genera of viruses.
Currently, there are vaccines and antiviral treatments available for influenza but none for the infections caused by other snsv. Kaslow r, stanberry l, le duc j eds viral infections of humans. The family consists of over 300 species that are divided into 5 genera. Analysis of arbovirus isolates from australia identifies. It is a severe multisystem syndrome caused by infectious viruses which lead to a potentially lethal disease syndrome characterized by fever, malaise, vomiting, mucosal and gastrointestinal gi bleeding. For most, no biochemical characterisation of the viruses has been reported to confirm their family or generic status. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Sandfly fever, also known as phlebotomus, pappataci, or 3day fever, is an arthropodborne febrile disease transmitted by phlebotomine sandflies.
Scribd is the worlds largest social reading and publishing site. Chapter three the envelope proteins of bunyavirales. Not shown to be antigenically related to members of other bunyaviridae genera. For example, sequencing techniques from human specimens have identified numerous new members of several virus families, including new. Each virus usually is associated with a particular rodent host species in which it is maintained. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. The surface glycoproteins extend up to 10 nm from the lipid bilayer. Like influenza virus polymerase, bunyavirus lproteins employ a capsnatching.
Bunya virus free download as powerpoint presentation. The bunyaviridae constitute a large family of enveloped animal viruses, many members of which cause serious diseases. Winner of the standing ovation award for best powerpoint templates from presentations magazine. To better understand the diversity of bunyaviruses and their circulation in australia, we sequenced 5 viruses gan gan, trubanaman, kowanyama, yacaaba, and taggert isolated and serologically identified 4 decades ago as members of the family bunyaviridae. Vertebrate reservoirs have been demonstrated for some viruses.
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