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Haemophilus parainfluenzae

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Definition

Noun

A gram-negative commensal bacterium thrived normally in the oropharynx of human and become an opportunistic pathogen causing systemic infections.

Supplement

Haemophilus parainfluenzae outer membrane contains coding proteins of approximately 37 kDa, lipopolysaccharides and peptidoglycan-associated proteins. It also exhibits multiplicity in OMG profiles which includes heat modifiable proteins such as P5, P2 and P6.

Haemophilus parainfluenzae is known to possess antigens that shared with variety of species including Haemophilus influenzae.

Haemophilus parainfluenzae is commonly isolated from oropharynx and has been regarded as contaminating commensal organisms in sputum of patient with chronic obstructive pulmonary diseases which causes systemic infections including meningitis, bacteremia and endocarditis.

Scientific classification:

 Kingdom: Bacteria
 Phylum: Proteobacteria
 Class: Gamma Proteobacteria
 Order: Pasteurellales
 Family: Pasteurellaceae
 Genus: Haemophilus
 Species: Haemophilus haemolyticus 

See also:

• Bacterium

• Chronic obstructive pulmonary disease