BISC300 Study Guide - Final Guide: Opportunistic Infection, Sepsis, Bacteremia
6 Mar 2017
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Chapter 35: pathogenicity: pathogenicity and infectious disease, definitions, cycles of infection. Passive: lesions, ulcers, wounds, tissue damage that causes opening for microbial entry. Active: production of lytic substances that alter host tissue. Infectious dose: exposure and transmission, airborne transmission, contact transmission, growth rate, pathogen suspended in droplets or dust in air, droplets: form in salvia, can only travel short distances, dust: pathogens on dust can survive extended periods. Can survive airborne hours to days: coming together or touching source, vertical transmission: between fetus and mother, can be direct contact or indirect. Indirect: inanimate material serve as vehicle fro spread. Primarily replicating nucleic acids to endure host to synthesis viral components: viruses background. Chapter 6: viruses and acellular infectious agents: viruses. Use host machinery for viral proteins synthesis: viral envelopes and enzymes, viral genome. Remain in host without destroying it: virulent phage: only 1 reproductive choice. Free in cytoplasm or integrates with host genome.
