COPD, acute exacerbation
Haemophilus influenzae

Haemophilus influenzae


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.