Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

Pneumococcal [noo-muh-KOK-uhl] disease is caused by a bacterium known as Streptococcus pneumoniae, or pneumococcus. Pneumococcal infections can range from ear and sinus infections to pneumonia and bloodstream infections. Children younger than 2 years of age are among those most at risk for disease. There are vaccines to prevent pneumococcal disease in children and adults.

NEW! Adults 65 years or older are now recommended 2 pneumococcal vaccines. Learn more.

Pneumococcal Vaccination


Risks and How It Spreads

Older woman sneezing

  • Anyone can get pneumococcal disease, but some people are at greater risk for disease than others.
  • Pneumococcal bacteria spread from person-to-person by direct contact with respiratory secretions, like saliva or mucus.


Signs and Symptoms

child sick in bed

There are many types of pneumococcal disease. Symptoms and complications depend on the part of the body that is infected…