Hansen - Hansen's disease - Mycobacterium leprae Acid fast...

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Hansen's disease - Mycobacterium leprae Acid fast , small bacillus Virulence: Waxy ( lipids) cell walls, intracellular Transmission: Direct, very close contact. Also depends on susceptibility of host: 1) age 2) health P/E: Skin - causes chronic lesion with same histology as tubercle, due to same immune responses. Disease: Two forms can occur: 1) Tuberculoid - milder, self-limiting, involves skin. More likely to occur in healthy adults 2) Lepromatous - progressive form - nodular lesions occur in skin, m.m., cartilage, nerves. Causes disfiguring, crippling, loss sensation. More likely to occur in very young, elderly, individuals with cell immunity. Identification: Demonstration AF bacillus in lesions. Not yet grown in vitro. Equine Encephalitis - Arboviruses (Toga viruses) Encephalitis - inflammation of the brain. Equine - infects horses also. Types viruses: 1) EEE 2) WEE 3) SLE 4) LaCross encephalitis Reservoir: Fowl Vector: Mosquito (Culex, Aedes). Prevalent in summer when in rainfall
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This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.

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Hansen - Hansen's disease - Mycobacterium leprae Acid fast...

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