webnotes_lec22_emergentdisease_112007

webnotes_lec22_emergentdisease_112007 - Vocabulary:...

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Unformatted text preview: Vocabulary: Emerging Diseases Emerging (emergent) disease Agent of disease (pathogen) Vector Transmission Prion Virus Bacterium Protozoan Antibiotic Resistance Vaccine/Immunization Prokaryote Eukaryote Disease Agents vs. Vectors Disease suddenly appears in significant number of individuals in a population New or thought to have been eradicated Host switching Mutation to more virulent form Emerging Disease Prion Self-replicating protein Invades nervous tissues BSE (Bovine Spongiform Encephalopathy, aka mad cow) CWD (Chronic Wasting Disease) CJD (Creutzfeldt-Jakob Disease) Viral Structure (general) Nucleic acid DNA (ss or ds) or RNA as genetic material Protein coat sometimes membrane Small! 20-400 nm (1 nanometer = 10-9 meters) Examples: Adenovirus, Influenza, HIV, bacteriophages Viral Replication Uses host cell organelles and materials to replicate Prokaryotes (bacteria)...
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webnotes_lec22_emergentdisease_112007 - Vocabulary:...

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