PPT-19 Viruses What do you think of when you hear the word “virus?”

Computer Brad Flu Sydney HPV Corley No Janna Zombies Lauren Ebola to kno de wae Brad Amino acids . Mike . Morain. Basic Lecture Structure. History of malware. Nature and operation of malware. Discuss means of identification, removal, and . prevention. Virtualization in malware. A Brief History. John Von Neumann. Embryonated. Egg. Viruses do not fall in the category of unicellular . microorganism. They . are obligate intracellular parasites and lack the . machinery . necessary for protein and nucleic acid . synthesis. Can Both Survive?. Alex Beutel. , B. . Aditya. . Prakash. , . Roni. Rosenfeld, Christos Faloutsos . Carnegie Mellon University, USA. KDD 2012, Beijing. Competing Contagions. Beutel et. al. 2012. 2. 1. A program that attaches itself to another . executable. (a . host program. ). Whenever the host program is executed, virus code is ran and it can make a copy of itself and infect other executables found in your memory or hard drive. A. Viruses are a unique group of biological entities. 1. They are not capable of surviving without a host cell (lack metabolic machinery). 2. They do, however, contain all the information necessary to direct metabolic processes. Intro to viruses. http://www.brainpop.com/health/diseasesinjuriesandconditions/viruses. /. What is a Virus?. Very small . Non-living particle. Made up of nucleic acid. . and proteins. Can only reproduce by infecting living cells. CLS 212: Medical Microbiology. History. Through the 1800s, many scientists discovered that something smaller than bacteria could cause disease and they called it . virion. (. Latin word- poison. ).. Where the name came from. This is a phrase coined from biology to describe a piece of software that behaves very much like a real virus (only it spreads from computer to computer rather than people!).. Lecturer. Dr Ashraf Khasawneh. Department of Biomedical Sciences. Virus infections are Universal …….. Introduction to Virology. A virus is an obligate intracellular parasite containing genetic material surrounded by protein. STRUCTURE. A core nucleic acid - DNA or RNA. Nucleic Acid surrounded by a protein, called a capsid.. CLASSIFICATION. By genomes: DNA viruses, RNA viruses or retroviruses . (any . of a group of RNA viruses that insert a DNA copy of their genome into the . arboviruses. ) are viruses that can be transmitted to man by arthropod vectors. . Arboviruses. belong to three families:. Togaviruses. . Bunyaviruses. e.g. . Sandfly. Fever. .. Flaviviruses. e.g. Yellow Fever, dengue, Japanese Encephalitis. Orthomyxoviridae family of viruses. RNA enveloped viruses that make up three genera. Influenzavirus A. Influenzavirus B. Influenzavirus C. The type A viruses are the most virulent among the three, genetically diverse and infecting human, birds and animals. . Outside . their host cells, viruses survive as . virus particles. , also known as . virions. . The . virion. is a . gene delivery . system; it contains the virus genome, and . its functions . are to protect the genome and to aid its . A . virus. (from the Latin virus meaning toxin or poison) is a microscopic organism consisting of genetic material (. RNA or DNA. ) surrounded by a protein, lipid, or glycoprotein coat.. Structure of a virus.