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Haemophilus influenzae disease is a name for any illness caused by bacteria called H. influenzae. Some of these illnesses, like ear infections, are mild while others, like bloodstream infections, are very serious. In spite of the name, H. influenzae do not cause influenza (the flu). Vaccines can prevent one type of H. influenzae (type b or Hib) disease.

Hib can cause severe infections of both the lining of the brain and spinal cord (meningitis) and the bloodstream. Vaccines can prevent Hib disease. CDC recommends Hib vaccination for all children younger than 2 years old.

People can spread H. influenzae, including Hib, by coughing or sneezing while in close contact with others. People around them then can breathe in the bacteria. Even people who are not sick can have the bacteria in their noses and throats and spread the bacteria.

Basic fact sheet about Hib disease and vaccine.

Page last reviewed:

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haemophilus influenzae disease home page

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haemophilus influenzae serotype b (hib) vaccination

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Haemophilus influenzae | Home | Hib | CDC

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Haemophilus influenzae disease is a name for any illness caused by bacteria called H. influenzae. Some of these illnesses, like ear infections, are mild while others, like bloodstream infections, are very serious. In spite of the name, H. influenzae do not cause influenza (the flu). Vaccines can prevent one type of H.

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Haemophilus Influenzae disease is a bacterial disease caused by the bacteria H. influenzae. There are six identifiable types of H. influenzae (A-F) as well as some non-identifiable types. It exists in the nose and throat, and causes infections when it spreads within the body. It can be spread to others through coughing and sneezing. It does not cause influenza, but does cause other mild and extreme illnesses.
INFO

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Haemophilus Influenzae is caused by the bacteria H. influenzae. Out of the six identifiable types, H. influenzae type B (also known as Hib) is the most recognized.

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Haemophilus Influenzae can cause illnesses ranging from mild ear infections all the way to pneumonia and even bloodstream infections. Common symptoms include fever, nausea, and pain.
See more here.

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This study deals with H. influenzae and its susceptibility (or lack thereof) to antibiotics. Certain H. influenzae strains are resistant to certain antibiotics. In this study, they found that strains taken from different locations (with patient wards and the ICU being compared in the article) tended to be resistant to different antibiotics.

Pei-Yi Su, Ay-Huey Huang, Chung-Hsu Lai, Hsiu-Fang Lin, Tsun-Mei Lin, and Cheng-Hsun Ho - Published April 28, 2020

ARTICLE, NIH PAGE

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Haemophilus Influenzae Type B can be prevented with a vaccine, though this vaccine will not prevent illness from the other types. H. influenzae can be contracted more than once, so the CDC still recommends the vaccine even if one has had Hib previously. If you have been in contact with some carrying H. influenzae, antibiotics may be prescribed to prevent you from becoming ill.
Haemophilus Influenzae is treated with antibiotics and possibly, depending on the illness you contracted, hospitalization, breathing support, or wound care.
Both younger and older people are at an increased risk of getting Haemophilus Influenzae, as well as people with medical conditions such as Sickle Cell, Asplenia, or HIV.
PREVENTION, TREATMENT, RISK

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Haemophilus Influenzae is usually diagnosed through blood or spinal fluid tests. Other tests can be used.
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INFO

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John B. Robbins (National Institutes of Health, left) and Rachel Schneerson (Eunice Kennedy Shriver National Institute of Child Health and Human Development, right).

Both worked together to create the Haemophilus Influenzae Type B vaccine.

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Hib Vaccine by Khan Academy Medicine

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Hib vaccine | Respiratory system diseases | NCLEX-RN | Khan Academy

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Haemophilus Influenzae can cause many different illnesses, including:

Pneumonia

Otitis Media (Middle Ear Infection)

Epiglottitis (Throat Swelling)

Eye Infection

Bloodstream Infection

Meningitis (Brain/Spinal Cord Membrane Swelling)

Cellulitis (Skin Infection)

Infectious Arthritis (Joint Inflammation)

Sinusitis (Sinus Infection)

Conjunctivitis (Eye Membrane Inflammation)

and likely more! This is a wide range of illnesses, with some (such as Otitis Media or Sinusitis) being common and relatively unconcerning while others (such as Bloodstream Infections or Meningitis) can be deadly. These results of Haemophilus Influenzae are especially concerning considering Hib mostly affects young children.

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Lily Coffey, Freshman Bio/FIS Undergrad

Kathy Marrs, Bio K-101 Fall 2021, MFW 12:00-12:50

Class Project Option 2: Pathogen Study & Padlet