Microbiology and Immunology 2500A/B Study Guide - Final Guide: Scotch Tape, Cyclospora Cayetanensis, Trichophyton

• School: Western University
• Department: Microbiology and Immunology
• Course: Microbiology and Immunology 2500A/B
• Professor: Kelly Summers

Document Summary

Parasitology: enteric protozoa- remember that no parasites are normal flora. Pathogenesis unknown, but causes soft, foul, gassy stools, often with fatigue. Residual lactose intolerance is common. Trophs look like goofy professor (no wisecracks!). Trophs may have ingested red cells- diagnostic. Severe but self limited diarrhoea in healthy, intractable in. Aids: cyclospora cayetanensis: via tropical fruits, blood & tissue parasites, plasmodium causes malaria. Fever of tropical origin is malaria until proved otherwise. Find by examination of blood films. P. falciparum is very dangerous especially in nonimmune hosts. Serious cases associated with thrombocytopenia. Three variants: i. cutaneous: l. tropica complex, Oriental sore, baghdad boil ii. Mucocutaneous: l. brasiliensis, chiclero ulcer, espundia (erosion of nasal septum) iii. Blood films to diagnose: free- living amoebas: naeglaria fowleri from swimming in warm freshwater lakes, primary amoebic meningitis (pam) usually fatal. Pruitis ani, flat sided ova on scotch tape test. Benign: ascaris lumbricoides large intestinal worms, pulmonary phase.