Haemophilus influenzae


See 'Additional Information'
See 'Additional Information'

General Information

Alternate Treatment

  • Fluoroquinolone


  • Azithromycin

  • Clarithromycin

  • Piperacillin/tazobactam

  • Doxycycline

  • Cephalosporins

Pathogen information

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


Normal respiratory flora

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

Most invasive disease is now caused by non-typable strains

Associated syndromes

Colonizer of the upper respiratory tract

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

Additional Information

Generally Standard Precautions

Isolation Precautions for serotype b (Hib)

  • ┬áDroplet precautions until 24 hours after effective therapy IF presentation is meningitis, epiglottitis, invasive bacteremia, septic arthritis, osteomyelitis, pericarditis, cellulitis, or pneumonia in an infant or child

Invasive disease is notifiable, all serotypes, if <5 years of age - call Public Health ASAP