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Haemophilus parainfluenzae
Definition 1
A species of facultatively anaerobic, Gram negative, coccobacilli shaped bacteria assigned to the phylum Proteobacteria. This species is oxidase, urease and porphyrin positive, can grow in culture with V factor alone, and requires putrescines for growth in culture. H. parainfluenzae is a commensal organism of the oral cavity and pharynx but may become pathogenic in immunocompromised individuals or individuals with underlying disease, being a causative agent of endocarditis. (NCI Thesaurus)
Definition 2
Any bacterial organism that can be assigned to the species Haemophilus parainfluenzae. (NCI Thesaurus/CDISC)
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