The hepatitis C virus (HCV) is a single-strand and positive-sense RNA virus of the Hepacivirus genus in the Flaviviridae family (1). According to the organization of the HCV genome‚ the virus is divided into 7 genotypes and more than 60 subtypes. The seven genotypes of this virus are seen in all over the world. It is known that HCV genotype one and four are hard to treat‚ while genotype 2 and 3 have more comfortable treatment. Thus‚ identification of HCV genotype in infected patients is essential
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Lecture 2- overview of the virus 1. The first step- the virus binds to a receptor-->entry and uncoating--> early gene expression-->replication of viral genome-->late gene expression->assembly of viral progeny-->exit 2. Concept 2.1- Virus entry is a multistep process with the ultimate goal of delivering viral genome (payload) into the cells. A. Binding to surface receptors- - a viral receptor is cell surface molecule‚ likely a transmembrane protein - a virus may need multiple receptors
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In general‚ an influenza virus infects only a single species; however‚ whole viruses may occasionally be transmitted from one species to another‚ and genetic reassortment between viruses from two different hosts can produce a new virus capable of infecting a third host. Avian influenza viruses are not readily introduced into humans [3]‚ possibly because humans
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dangerous type of viruses is one capable of transmitting itself across networks and bypassing security system. Worms are similar to computer viruses which they can replicate themselves to your computer‚ spread from computer to computer‚ but unlike a virus‚ it has the capability to travel without any human action. A worm takes advantage of file or information transport features on your system‚ which is what allows it to travel without any human action. The danger about the worms is the ability to reproduce
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COMPUTER VIRUS AND ITS TYPES COMPUTER VIRUS Computer virus is a software program written with malicious intentions. There are number of computer viruses that can impede the functioning of your computer system. DETAIL ABOUT COMPUTER VIRUS They are replicated by themselves. Viruses are so dangerous and malicious that they can be automatically copied and pasted from memory to memory over and over; the transmitting power is too much quick from network to network that can simply hang smoothly running
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How worried are you about the Influenza Virus? The Influenza virus‚ commonly known as the flu‚ is a viral disease that can be infectious in mammals and birds‚ it´s caused by RNA viruses. This disease is most common between the months of October and May‚ it can last from three days to five days; it´s an acute disease‚ because manifests quickly and last a short time. There are three types of Influenza according to how severe they are; Type A: The most severe type with the most acute symptoms.
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Human immunodeficiency virus (HIV) is a lentivirus (slowly-replicating retrovirus) that causes acquired immunodeficiency syndrome (AIDS)‚[1] an infectious disease in which progressive failure of the human immune system leads to life-threatening opportunistic infections and/or cancer. HIV infects vital cells in the human immune system such as helper T cells (specifically CD4+ T cells)‚ macrophages‚ and dendritic cells. HIV infection leads to low levels of CD4+ T cells through three main mechanisms:
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killing viruses‚ the Ebola virus. Have you ever wondered how it infects people‚ how the victims are treated‚ and how they are working to control the outbreaks. These are just some of the many questions about this deadly disease that could soon turn into an epidemic. The Ebola virus is a member of the negative strand RNA virus‚ also known as flivoviruses. Filovirus causes hemorrhagic fevers in humans‚ but there are only 2 known members of the filovirus so far; Ebola and Marburg virus. There are four different
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Development of a Monovalent Vaccine Based on cAdVax Technology Against Zaire Ebola Virus Offers Hope in Developing a Bivalent Vaccine Against the 2 Deadliest Strains Microbial Genetics BT405 Thomas Jefferson University December 15‚ 2010 Development of a Monovalent Vaccine Based on cAdVax Technology Against Zaire Ebola Virus Offers Hope in Developing a Bivalent Vaccine Against the 2 Deadliest Strains Ebola viruses are a group of highly pathogenic filoviruses that cause outbreaks of severe
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NEW MICROBIOLOGICA‚ 36‚ 211-227‚ 2013 Chikungunya virus infection: an overview Claudia Caglioti‚ Eleonora Lalle‚ Concetta Castilletti‚ Fabrizio Carletti‚ Maria Rosaria Capobianchi‚ Licia Bordi Laboratory of Virology‚ “L. Spallanzani” National Institute for Infectious Diseases‚ Rome‚ Italy SUMMARY Chikungunya virus (CHIKV) is a mosquito-transmitted alphavirus belonging to the Togaviridae family‚ first isolated in Tanzania in 1952. The main vectors are mosquitoes from the Aedes species. Recently
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