Pathogens
Haemophilus influenzae

Haemophilus influenzae

Precautions

Routine Practices

General Information

Facultatively anaerobic Gram-negative coccobacillus or small bacillus with fastidious growth requirements.

Naturally found to colonize the mucous membranes in humans, usually with unencapsulated strains. Colonization with encapsulated strains has decreased since the introduction of the Hib conjugate vaccine.

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

Community-acquired infections including:

  • Acute otitis media
  • Community-acquired pneumonia
  • Bloodstream infections
  • Neonatal sepsis
  • Meningitis