Haemophilus Influenzae

What is Haemophilus Influenzae?

Haemophilus influenzae is a bacterium that is found in the respiratory tract of people of all ages. It causes a wide range of illnesses, ranging from mild infections to serious diseases such as meningitis, pneumonia, bacteremia, and sepsis.

Haemophilus influenzae is a common bacterial pathogen that is responsible for a variety of illnesses, including ear infections, meningitis (an infection of the membranes surrounding the brain and spinal cord), sinus infections, bronchitis, and pneumonia.

For children and adults, the bacteria is spread through direct contact with respiratory secretions, such as droplets in the air from a cough or sneeze, or from coming into contact with saliva or secretions from the nose or throat.

Signs & Symptoms of Haemophilus Influenzae

  • Ear infections
  • Meningitis
  • Sinus infections
  • Bronchitis
  • Pneumonia
  • Sore throat
  • Fever
  • Cough


Haemophilus influenzae is treated with antibiotics, such as amoxicillin, which can be taken orally or injected into a vein. Other antibiotics that may be used include cefuroxime, ceftriaxone, and azithromycin.

In severe cases, hospitalization may be required. People with meningitis may receive treatment with high doses of antibiotics, as well as supportive care.

People who have an infection caused by this bacteria should stay away from other people until they have received antibiotic treatment. The bacteria can easily be spread to other people.