What Parents Should Know about Children with Intracranial Infections Associated with Streptococcus Bacteria
- CDC is investigating a possible increase in intracranial (within the head) infections in children.
- A preliminary analysis of hospitalizations from a wide range of children’s hospitals across the United States has not found an increase in intracranial infections in children. Additional analyses are ongoing and results may change, but the preliminary data are reassuring.
- Seek medical care immediately if your child has symptoms of a head infection.
- Abscess — ab-sess
- Empyema— EM-pie-EE-muh
- Endocarditis — en-doe-car-die-tess
- Intermedius — in-ter-meed-ee-us
- Pneumoniae — new-moe-knee-ae
- Pneumococcal — new-moe-kok-uhl
- Streptococcal — strep-toe-kok-uhl
- Streptococcus — strep-toe-kok-us
Types of infections
The types of head infections CDC is investigating include
- Brain abscess — a collection of pus from an infection in the brain that puts harmful pressure on brain tissue
- Subdural empyema — a collection of pus from an infection in the subdural space, which is between the outer and middle layers of membrane around the brain
- Epidural empyema — a collection of pus from an infection in the epidural space, which is the area between the skull and the thick membrane that covers the brain
In healthy children, these infections are most often caused by Streptococcus bacteria commonly found in the nose and throat, such as S. intermedius and S. pneumoniae. Most children will not have any illness from these bacteria when they are found in the nose and throat. However, in rare cases the germs may enter parts of the body that are normally free from germs. When this happens, it is called invasive disease and is usually very severe.
What parents can do
If you have any questions about your child’s health, call your child’s healthcare provider. Other things you can do:
Symptoms of a head infection include:
- Severe headache
- Changes in personality or behavior (e.g., confusion, irritability)
- Changes in speech (e.g., slurred speech)
- Weakness on one side of the body
- Changes in vision, such as blurring or double vision
- Stiff neck or back
Children with head infections may also have a fever and vomit.
All children should get vaccinated against pneumococcal disease, which helps prevent S. pneumoniae infections. There’s no vaccine to prevent S. intermedius infections. Learn more about vaccines recommended for children.
About Streptococcus bacteria causing head infections
Infections of the brain are rare because the body has several defenses to protect it. One of these is the blood-brain barrier, a thick membrane that keeps germs from getting into the brain. However, in some cases, germs can get through these defenses and infect the brain.
S. intermedius is a type of bacteria that rarely causes illness. But when they do, the bacteria can cause abscesses—collections of pus. These bacteria most commonly cause abscesses in the liver and brain. They can also cause an infection in the heart, known as endocarditis. S. intermedius can affect people of all ages and cause severe illness in otherwise healthy people.
S. pneumoniae can cause many types of infections, which are collectively known as pneumococcal disease. These infections range from ear and sinus infections to infections of the lung, blood, or lining of the brain and spinal cord. Most pneumococcal infections are mild, but some can be severe. Anyone can get pneumococcal disease, but being younger than 2 years old or 65 years or older or having certain medical conditions can increase risk.
Germs that can cause head infections, such as S. intermedius, are commonly found in the nose, mouth, and throat. These bacteria can enter the body and spread to the brain or the layers around the brain
- Through the bloodstream from an infection in other parts of the body, such as ears, eyes, sinuses, or teeth
- By entering the brain directly through an open wound in the head
However, we do know that pediatric intracranial infections can rarely follow viral and bacterial respiratory infections, like sinusitis.
Doctors diagnose head infections by first conducting a physical exam and obtaining a complete medical history of the patient. To confirm the diagnosis, doctors may use diagnostic tests, such as
- Magnetic resonance imaging (MRI)
- Computed tomography (CT) scan
- Blood tests
- Lumbar puncture (spinal tap)
Doctors may also collect a sample of pus to determine which germ is causing the infection.
Head infections can be difficult to treat. Antibiotics are used to kill the bacteria causing the infections, and surgery is often needed to drain the pus. Getting treatment quickly is important.
Even with treatment, head infections can sometimes lead to long-term neurological (nervous system) problems, such as weakness or trouble moving. These infections can also lead to the body having an extreme response to the infection, which is known as sepsis. With treatment, these infections rarely result in death.