Microbiology and Immunology 3820A Study Guide - Final Guide: Lymphatic Vessel, Blastomycosis, Sporothrix Schenckii
20 Dec 2016
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Structure: mycobacteria, slender, rod-shaped bacteria, slow growth, poor staining & acid fastness (once stained- resistant to. Intracellular, gram positive colourization: cell walls- 60% lipid w long chain fatty acids= mycolic acids. Once infected w them can"t get rid of them. Classification: tubercle bacilli complex (tb, mott (mycobacteria other than tubercle bacilli, mycobacterium leprae (leprosy, tuberculosis complex cause real & genuine tb, mycobacterium: tuberculosis, bovis (bovine= cattle, wild bison out west), africanum, canettii, microti. Incidence low in na except for: first nations, inuit, refugees, aids & homeless ppl. Airborne from active cases coughing respiratory spread. Tb pulmonary: aysmptomatic at first w insidious onset of cough! Highly infectious pts may seem in good health for long periods. Symptoms: (occur by time lesion is on chest xray: fever, weight loss, hemoptysis (coughing up blood) Pulmonary tb adults: apical aras seeded via hematogenous route from undetected primary focus in lower lung. Extrapulmonary tb (15%)= acquired via hematogenous seeding &
