ENH 220 Lecture Notes - Lecture 4: Itch, Chloramphenicol, Inclusion Bodies

• School: Ryerson University
• Department: Environmental Health
• Course: ENH 220
• Professor: Melissa Moos

Document Summary

Chapter 5- pathogenic microorganisms, fungi and animal parasites. Antibiotic sensitivity testing and interpretation of results: discuss infections caused by chlamydiae, mycoplasma, rickettsiae, and fungi, explain. Pathogenic microorganisms: bacteria, chlamydiae, rickettsiae and ehrlichiae, mycoplasma, viruses, fungi. Classified according to four major characteristics: shape and arrangement: coccus (sphere), bacillus (rod), spiral, gram stain reaction: gram-positive (stains purple) and gram-negative (stains red/pink, biochemical and growth characteristics. Biochemical profile (useful for id: antigenic structure: antigens in cell body, capsule, flagella. Kidney bean-shaped, in pairs: neisseriae: bacillus (rod-shaped) Comma-shaped: vibrio: spirochete (spiral) spirochete (spiral, tightly-coiled: treponema pallidum, relaxed coil: borrelia (lyme disease) Readily gram-stained organisms: gram-positive cocci: staphylococcus, streptococcus, enterococcus (purple, gram-negative cocci: neisseria, meningitis, gonorrhea (pink, pathogenic, gram-positive rods: bacillus, corynebacterium, clostridium, listeria, Gram-negative rods: pathogenic inside and outside intestinal tract: escherichia coli (e. coli), Salmonella: pathogenic inside intestinal tract: shigella, vibrio, campylobacter, Helicobacter(ulcer: pathogenic outside intestinal tract: klebsiella(pneumonia) enterobacter,