Haemophilus influenzae


Standard Precautions
Standard Precautions

General Information

Pathogen information

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


Normal respiratory flora

Invasive disease sharply declined after Hib conjugate vaccine introduced.

Most invasive disease is now caused by non-typeable strains

Associated syndromes

Colonizer of the upper respiratory tract

May cause invasive disease including meningitis, pneumonia/empyema, bacteremia, epiglottitis, MSK infection and others