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8 Cards in this Set
- Front
- Back
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What are the morphologic characteristics of Haemophilus influenzae?
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Small, non-motile gram negative coccobacilli-filamentous rods
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What are the natural reservoirs for H. influenzae?
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None - humans are the only hosts.
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What are strains of H. influenzae?
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Type B, and non-typeable H. influenzae
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What diseases are caused by non-typeable H. influenzae?
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Mucosal infections - AOE, sinusitis, COPD exacerbations, pneumonia
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What diseases are caused by Type B H. influenzae?
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Invasive infections - meningitis, epiglottitis, periorbital cellulitis, pneumonia
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Is there a vaccine for H. influenza?
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Only Type B H. influenzae - vaccinated hosts are still vulnerable to non-typeable H. flu infections.
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Which Haemophilus species is an STD?
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H. ducreyi - causes genital ulcers and inguinal lymphadenitis
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What is the disease course of H. ducreyi infection?
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Starts as papule -> painful ulcer -> 50% lymphadenitis. DDx includes primary/secondary T. palladium, HSV-2, LGV/C. trachomatis
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