Haemophilus

Haemophilus
Genus of tiny rod-shaped bacteria.

All are strict parasites occurring in the respiratory tracts of warm-blooded animals, including humans, and in certain cold-blooded animals. Some require oxygen, others do not. H. influenzae causes severe bacterial diseases in young children, including meningitis, otitis, and pneumonia. Another species of Haemophilus causes a sexually transmitted disease in humans known as chancroid, or soft chancre. Yet another causes secondary infection in persons with influenza.

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▪ bacteria genus
also spelled  Hemophilus,  
 genus of very small rod-shaped bacteria of uncertain affiliation. All species of Haemophilus are strict parasites occurring in the respiratory tracts of warm-blooded animals, including humans, and in certain cold-blooded animals. All Haemophilus are gram-negative, aerobic or facultative anaerobic and nonmotile and require a growth factor that is found in blood. They are minute in size, H. influenzae measuring 0.3 micrometre across and up to 2 micrometres long.

      H. gallinarum causes infectious coryza in fowl. H. parasuis (itself not disease-causing), together with a virus (Tarpeia suis), causes swine influenza. H. ducreyi causes a venereal disease in humans known as chancroid, or soft chancre. H. influenzae was at one time thought to cause human influenza, but it is now believed to be a source of secondary infection in persons suffering from influenza, which is now known to be a viral disease.

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Universalium. 2010.

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Look at other dictionaries:

  • Haemophilus — Kolonien von Haemophilus influenzae in einem Blutagar Systematik Domäne: Bakterien (Bacteria) …   Deutsch Wikipedia

  • Haemophilus — Haemophilus …   Wikipédia en Français

  • haemophilus — género de bacterias, gram negativos, de forma bacilar, de pequeño tamaño (0.4 mm), gram negativos, aeróbicos y susceptibles de pleomorfismo.Enfermedades causadas por el Haemophilus [ICD 10: B96.3] microfotografía [véase… …   Diccionario médico

  • Haemophilus —   [hɛ ] der, , eine Bakteriengattung; Haemophilus influenzae verursacht eine Pneumonie, die nach Infektion mit Influenzaviren (Virusgrippe) häufig als bakterielle Superinfektion auftritt …   Universal-Lexikon

  • Haemophilus — См. Гемоглобинофильные бактерии (Источник: «Словарь терминов микробиологии») …   Словарь микробиологии

  • haemophilus — ● haemophilus ou hemophilus nom masculin Genre de bacilles à Gram négatif nécessitant, pour se développer, certains facteurs sanguins (hémine, ou facteur X ; NAD, ou facteur V) …   Encyclopédie Universelle

  • Haemophilus — vgl. Hämophilus …   Das Wörterbuch medizinischer Fachausdrücke

  • Haemophilus — Not to be confused with Haemophilia. Haemophilus Haemophilus influenzae on a blood agar plate. Scientific classification Kingdom …   Wikipedia

  • Haemophilus — Demande de traduction Haemophilus → Haemophilus …   Wikipédia en Français

  • Haemophilus —   Haemophilus …   Wikipedia Español

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