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Published byΦωτινή Βασιλικός Modified over 6 years ago
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VIRUSES CHAPTER 13 Gardasil® targets two strains of HPV that cause 70% of all cervical cancer, and two strains that cause 30% of genital warts.. Age 9-26 are suggested; 3 shots two months apart; costs $120 x 3 that is not covered by all insurance policies.
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What are Viruses? Obligate intracellular parasites Viral components
Nucleic acids Capsid Envelope British immunologist Peter Medawar:”A piece of bad news wrapped up in protein”
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Viral Shapes and Sizes Helical Spherical Polyhedral
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Infectious Properties
Viral Host range Spectrum of host Viral specificity Types of cells Viral Origins Unknown
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Nucleic Acid DNA viruses RNA viruses ds DNA ss DNA + strand – strand
Double strand
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11 RNA Virus Families Togaviridae Flaviviridae Retroviridae
Picornaviridae Togaviridae Flaviviridae Retroviridae Paramyxoviridae Rhabdoviridae Orthomyxoviridae
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RNA Virus Families (cont.)
Filoviridae Bunyaviridae Arenaviridae Reoviridae
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DNA Virus Families Adenoviridae Herpesviridae Poxviridae Papovaviridae
Hepadnaviridae Parvoviridae Emerging Viruses: Previously endemic
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Viral Replication Activities Adsorption
Penetration (virus or chromosome) Synthesis Maturation Release
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Bacteriophages Plaque counts
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Culturing Animal Viruses
Eggs Cell Culture Primary Continuous
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Viral Cytopathic Effects
Cytopathy Teratogenic effects
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Viruslike Agents Satellites Prions Viroids
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