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Transcript
Principles of Immunology Infectious Process 4/13/06 ”If we had no winter, the spring would not be so pleasant: if we did not sometimes taste of adversity, prosperity would not be so welcome” Anne Bradstreet Word/Terms List Antigenemia Antigenic drift Antigenic shift Disease Infection Intoxication Normal flora Toxoid Infectious Process Infectious Disease Triangle Microbe/Agent Host Environmental conditions Categories of Microbes/Agents Viruses Bacteria Fungi Parasites Prions Pathogenicity Virulence factors Infectious Dose Route of infection Mode of transmission Microbe stability Host Defenses Innate Adaptive Things to remember Host range Infectious process as direct or indirect cause of disease Infection vs. disease Pathogenicity Virulence factors Infectious Dose Route of infection Mode of transmission Microbe stability Viral diseases Obligate intracellular parasites Enveloped vs. non enveloped Latency Host range Tissue/cell specificity Antigenic changes Immunity to Viral diseases Interferon NK cells Neutralizing Ab Secretory IgA C fixation Cell mediated immunity Bacterial diseases Extracellular vs. intracellular Toxins Cell associated Extracellular Enzymes Capsules Fimbriae/pili Immunity to Bacterial Diseases Antibodies Opsonization Phagocytes Cell-mediated immunity Fungal diseases Opportunism Capsules Spores Immunity to Fungal diseases Innate Normal flora Antibodies Cell mediated immunity Parasitic diseases Large complex agents Range of diseases Environmental factors Immunity is complex