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24 Cards in this Set
- Front
- Back
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What is the bacteria responsible for Rocky Mountain Spotted Fever?
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Rickettsia rickettsi (tick vector)
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What bacteria causes Typhus?
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Rickettsia prowazekii (lice vector)
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What vector transmits RMSF?
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The Dermacenter tick.
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Where is RMSF most prevalent?
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Carolinas and Oklahoma
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Is RMSP fatal?
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Yes, 25% mortality of left untreated.
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How is RMSF diagnosed?
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Difficult diagnosis. Seasonal (spring and summer), high incidence in Children.
Petechial ash occurs first on extremities, then truncal. (20% have no rash) |
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RMSF Treatment?
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Tick removal, antibiotics. Long list of post-infective complications.
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What disease is associated with adverse social conditions, war, and famine?
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Typhus (Rickettsia prowazekii or typhi)
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What infection route does Typhus follow?
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Inhalation of louse feces, other.
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What clinical presentation does Typhus follow?
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Macular/maculopapular/petechial rash on trunk/axilla -> extremities. Opposite of RMSF.
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What is HME (rickettsial disease)?
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Human Monocytic Ehrlichiosis
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What is HGA (rickettsial disease)?
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Human Granulocytic Anaplasmosis
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What causes scrub typhus?
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Orientia tsutsugamushi
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What's the diagnostic clue for scrub typhus?
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Small papular eschar, central necrosis. "Cigarette Burn Lesion"
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What are the risk factors for scrub typhus?
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Chigger bites, seasonal, regional travel.
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Oroya fever?
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Bartonella bacilliformis
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Cat Scratch Disease?
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Bartonella henselae (local infection caused by Pasteurella multocida)
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Trench Fever?
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Bartonella quintana
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What are the signs of Cat Scratch Disease?
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Regional lymphadenopathy (axilla common from hand scratch), 1w to 2mo. following exposure.
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Which populations are at risk for Trench Fever?
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Refugee camps, homeless alcoholics.
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What Bartonella infection is associated with raised, red nodular lesions?
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Bacillary angiomatosis from Bartonella quintana/Trench fever. Lesions a result of neovascular proliferation.
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What gram negative, highly resistant rod is associated with sheep farming?
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Coxiella burnetii
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Q Fever?
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Coxiella burnetii
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What are the four syndromes of Coxiella infection?
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1) Acute Febrile Illness
2) Atypical Pneumonia 3) Hepatitis 4) A or S Endocarditis |
