Difference between revisions of "Category:Haemophilus species"

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|pagebody =''Haemophilus'' species are morphologically variable Gram-negative bacilli, ranging from short rods to long filaments. They inhabit the mucosal epithelium of the upper respiratory and lower genital tract. The genus includes commensal and pathogenic species.
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===Overview===
 
  
*Inhabit mucosal epithelium of upper respiratory and lower genital tract
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[[Category:Bacterial Organisms]]
*Suppurative infections due to release of pro-inflammatory cytokines released from macrophages
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[[Category:Gram_negative_bacteria]]
*Serofibrinous to fibrinopurative infections of lungs, body cavities and joints
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[[Category:Rods]]
*Colonisation of meningeal vessels causes a thrombotic vasculitis leading to encephalitis and meningitis
 
 
 
 
 
===''Haemophilus'' characteristics===
 
 
 
*Morphologically variable Gram-negative bacilli, ranging from short rods to long filaments
 
*Facultative anaerobes
 
*Typically oxidase positive
 
*Depend on beta-nicotinamide adenine dinucleotide (NAD) (V factor) and/or Haemin (X fector) for growth
 
*Heated blood agar (Chocolate Agar) required for growth of NAD-dependent strains
 
*Haemin-dependent strains grow on Blood Agar
 
*Do not grow on MacConkey agar
 
 
 
 
 
===''[[Haemophilus parasuis]]''===
 
 
 
 
 
 
 
===''[[Haemophilus somnus]]''===
 
 
 
 
 
 
 
 
 
===''Haemophilus pleuropneumonia''===
 
 
 
*''H. pleuropneumonia'' in [[Respiratory Bacterial Infections - Pathology#Contagious porcine pleuropneumonia|Contagious porcine pleuropneumonia]]
 
 
 
===''Haemophilus paragalinarum''===
 
 
 
*Infectious coryza of poultry - accute upper-respiratory tract infection
 
*Nasal discharge, swollen sinuses, facial oedema and conjunctivitis
 
*Resistant to complement-mediated lysis and phagocytosis
 
 
 
 
 
===''Haemophilus haemoglobinophilus''===
 
 
 
*Commensal of canine lower genital tract
 
*Causes cystitis and neonatal infections
 
 
 
 
 
===''Haemophilus felis''===
 
 
 
*Associated with feline conjunctivitis
 
 
 
 
 
===''Haemophilus influenzae''===
 
 
 
*Human meningitis, septicaemia, bronchopneumonia, conjunctivitis, epiglottitis, and otitis
 
[[Category:Bacteria]][[Category:Gram_negative_bacteria]][[Category:Rods]]
 

Latest revision as of 21:28, 5 November 2010

Haemophilus species

Haemophilus species are morphologically variable Gram-negative bacilli, ranging from short rods to long filaments. They inhabit the mucosal epithelium of the upper respiratory and lower genital tract. The genus includes commensal and pathogenic species.