Haemophilus Influenzae

Causes severe infection, mainly in infants and children under five

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    Overview

    Haemophilus influenzae is a bacterium that can cause serious infections, mainly in infants and children under five. Despite its name, it does not cause the flu.

    This bacterium can be "nontypeable" or one of six types (A through F), with type B being the most common and the one with a vaccine to prevent it.

    Symptoms & diagnosis

    Symptoms can vary depending on which part of the body is infected and may include fever, weakness, nausea, vomiting, cough, or stiff neck. Other infections can cause similar symptoms, so it is important to seek medical care to get the correct diagnosis and treatment.

    Treatment

    Antibiotics are used to treat H. influenzae infections.

    Prevention

    There is a vaccine available that can prevent H. influenzae type b (Hib) disease. However, the Hib vaccine does not prevent illness caused by other types of H. influenzae. An antibiotic called rifampin is used in some circumstances as a preventative treatment specifically for household or close contacts who have been exposed to people with types a or b H. influenzae disease.

    The CDC recommends the Hib vaccine for all children under 5, starting at 2 months old.

    Reporting

    Haemophilus Influenzae is a reportable condition.

    Learn more about reportable conditions

    Resources for the General Public

    Resources for Healthcare Providers