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Streptococcus pneumoniae, or pneumococcus, is a type of bacterium that causes pneumococcal [noo-muh-KOK-uhl] disease. Pneumococcal infections can range from ear and sinus infections to pneumonia and bloodstream infections. Children younger than 2 years old and adults 65 years or older are among those most at risk for disease. There are vaccines to prevent pneumococcal disease in children and adults.

Pneumococcal Vaccination

  • Pneumococcal Vaccines
    Pneumococcal vaccines are very good at preventing severe disease and hospitalization.
  • Vaccine Information Statements
    These one-page CDC vaccine information statements explain who should get pneumococcal vaccines and when.
  • Pneumococcal Vaccine Basics
    Get comprehensive information about pneumococcal vaccines and other educational tools.
  • Vaccine Safety
    As with all vaccines, there can be minor reactions, including pain and redness at the injection site, headache, fatigue or discomfort, after pneumococcal vaccination.
  • Pneumococcal Vaccine Recommendations
    View recommendations of the Advisory Committee on Immunization Practices (ACIP).

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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.

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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 the bacteria infects…

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