Haemophilus haemolyticus

**Semantic type:** Bacterium

**Definition:** A species of facultatively anaerobic, Gram negative, coccobacilli shaped bacteria assigned to the phylum Proteobacteria. This species is urease, catalase and oxidase positive, porphyrin negative and requires both X and V factors to grow in culture. H. haemolyticus is normally nonpathogenic but may cause disease in immunocompromised patients.

**Synonyms:** - HAEMOPHILUS HAEMOLYTICUS