Haemophilus Influenzae Infections

Also known as: Haemophilus influenzae, H. influenzae, Hib.

What are Haemophilus influenzae infections?

Haemophilus influenzae infections refer to a variety of problems that are all caused by the Haemophilus influenzae bacteria. They can impact everything from the ear to the brain and bloodstream.

What causes Haemophilus influenzae infections?

The bacterium Haemophilus influenzae is the direct cause of the infections. It’s spread through the air via coughing or sneezing. Most people carry the bacteria and exhibit no symptoms, but it can cause problems in certain populations with compromised immunity.

What are the symptoms of Haemophilus influenzae infections?

The symptoms of Haemophilus influenzae vary based on what part of the body is impacted. Possible symptoms include ear infections, eye problems, sinus infections, breathing problems or brain and spinal cord problems. Symptoms can range from mild to life threatening.

What are Haemophilus influenzae infection care options?

Antibiotics can be used to treat Haemophilus influenzae infections. The nature and course of treatment will vary based on the severity of the disease, as well as where it is affecting the body.

Reviewed by: Carolina Sanchez-Vegas, MD

This page was last updated on: September 16, 2025 12:28 PM