Haemophilus influenzae Disease

Homepage for CDC's information on Haemophilus influenzae infections.

This content is for informational purposes only. Always consult a healthcare professional.

Source: Centers for Disease Control and Prevention — Content from the Centers for Disease Control and Prevention (public domain).

Mother checks daughter’s temperature.

About

Learn about these infections, including types, treatment, and prevention.

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Sept. 22, 2025

A mother snuggles with her sick child.

Symptoms and Complications

A wide range of symptoms and complications can occur based on the part of the body affected.

Sept. 22, 2025

A father kissing the cheek of his infant.

Risk Factors

Anyone can get it, but factors, like age, can increase someone’s risk.

Sept. 22, 2025

A healthcare provider places a Band-Aid on baby’s thigh.

Vaccination

All children younger than 5 years old should get Haemophilus influenzae type b or Hib vaccines.

Sept. 22, 2025

For Professionals

Healthcare provider observing an x-ray of the chest.

Clinical Overview

Information on diagnosis, prevention guidelines, types of infection, and who’s at risk.

Sept. 22, 2025

An illustration of data.

Surveillance and Trends

CDC tracks invasive __ cases nationally. Vaccine-preventable cases are low.

Sept. 22, 2025

A CDC laboratorian preps for testing using polymerase chain reaction.

Bacterial Meningitis Lab

This CDC laboratory focuses on two bacterial causes of meningitis.

Sept. 22, 2025

⚠ Caution
Medical Disclaimer: This information is for educational purposes only. Always consult a healthcare professional for medical advice.