Sunday, April 5, 2009

15 - Facultative anaerobes part 5 ( PASTEURELLACEAE )

PASTEURELLACEAE : 

• Pasteurella

o Pathogen of domestic animals (septacemia = cattle; fowl cholera = chickens)

o P. multocida transmitted to humans by dog / cat bites.

o Nutritionally fastidious; requires complex media for growth in the laboratory


• Haemophilus:

o Common inhabitants of upper respiratory tract mucous membrane, mouth, vagina, GI.

o Requires X factor (unknown component of hemoglobin) for synthesising parts of the cytochrome system; eg choclate agar (blood heated & gives brown color) supllemented with NAD or NADP (V factor).

o H. influenzae - flu like

o H. ducreyi -- veneral disease aka soft chancre

o H. suis-- hog influenza

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