HPRO 3335 Study Guide - Final Guide: Schistosomiasis, Antiviral Drug, Phagolysosome

• School: Dalhousie University
• Department: Health Promotion
• Course: HPRO 3335
• Professor: Lesley Barnes

Document Summary

Indirectly: fecal-oral route (cholera & typhoid, airborne: coughing and sneezing droplets (i. e. measles and mumps) Directly: skin to skin or mucous membrane to mucous membrane, from environment; i. e. rusty nail (tetanus, portal of entry, some as a mode of escape, susceptible host. Viruses: subcellular, semi-living, takes over dna & rna of another cell, cellular walls are non-existent. Protein coat around dna & rna; uses mechanisms of that cell. Blocking it before getting to a host cell is the prevention then anti-virals are used to destroy those cells. Structure: different physical structures with no cellular membrane. Destruction: no cells available to take over; and antivirals. Classification: the size, shape, rna vs. dna viruses & what type of cells they took over (obligate parasites). Bacteria: single-celled, plant-like, has a cell wall & living organisms. Rickettsia: associated with anthropods, small and intracellular. Helps with digestion & can directly destroy other pathogens; helps with the production of vitamins.