Haemophilus influenzae


Standard Precautions
Standard Precautions

General Information

Small gram-negative bacillus, encapsulated or not (non-typeable).

Normal respiratory flora.

Invasive disease sharply declined after Hib conjugate vaccine widely used, especially in children <5 years old who were the main victims.

Most invasive disease is now caused by non-typable strains.

Colonizer of the upper respiratory tract.

May cause invasive disease including:

  • Meningitis

  • Pneumonia/empyema

  • Bacteremia

  • Epiglottitis

  • MSK infection

  • Others

Droplet precautions if presentation is epiglottitis.

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