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10 Cards in this Set
- Front
- Back
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Epizootic
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an outbreak of disease among animals of the same species in a defined period of time
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Enzootic
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disease that is constantly present in a given population of animals
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Transmission methods of zoonoses
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1) direct contact with secretions or excretions of animals
2) bites / scratches 3) inhalation 4) ingestion 5) insect vector |
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Organism that causes cat scratch disease and characteristics of the bug
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Bartonella henselae
- obligate intracellular gram negative bacterium - lives in erythrocytes and endothelial cells |
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Host for bartonellosis
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health people exposed to bug,
immunosuppressed (AIDS, transplant) |
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Reservoir for bartonella
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cats / kittens
- typically asymptomatic - cat fleas go from cat-cat - will be transmitted via bite / scratch |
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Clinical picture for cat scratch disease (for healthy people...)
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- small nodule at site of scratch / bite
- tender lymphadonopathy that might be fluctuant and will drain if not aspirated |
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clinical picture for immunocompromised patients for cat scratch disease
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- hematogenous spread of bug
- liver, spleen involvement - multiple, non-fluctuant, non-tender skin nodules - bascillary angiomatosis - endocarditis possible |
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Diagnosis of bartonella
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- serology (acute and convalescent)
(for this disease treat then confirm) |
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Tx of cat scratch
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- not always needed, if needed use azithromycin
(or quinolones, trimethoprim/sulfa, doxycycline) |
