What is pneumococcal disease?
Pneumococcal disease is an infection caused by a type of bacteria called Streptococcus pneumoniae. When these bacteria invade the lungs, they can cause pneumonia. They can also invade the bloodstream, causing bacteremia, and/or invade the tissues and fluids surrounding the brain and spinal cord, causing meningitis. Pneumococcal disease can also cause middle ear infection and sinus infections.
Pneumococcal disease is a very serious illness. Invasive pneumococcal disease kills nearly 5,000 people in the United States each year, most of them 65 years of age or older. It is also the most common cause of invasive bacterial infection in US children. Pneumococcal disease can in young children can lead to meningitis, bacteremia, otitis media (ear infections) and, in some cases, death. Children under 2 years of age fall into the highest general risk group for invasive pneumococcal infections.
The best way to protect against pneumococcal disease is through vaccination. There are two types of pneumococcal vaccine currently available: a conjugate vaccine recommended for all children younger than 2 years and a polysaccharide vaccine recommended for all adults 65 and older and those 2 to 64 years of age with certain underlying medical conditions.
A single dose of the pneumococcal polysaccharide vaccine protects against the 23 types of Streptococcus pneumoniae bacteria that are responsible for causing more than 90 percent of all pneumococcal disease cases in adults.
The pneumococcal conjugate vaccine, administered to infants and toddlers before their second birthday, protects against the 86 percent of the bacteria types that cause blood infections in children and 83 percent of those that cause meningitis in children.
The symptoms of pneumococcal disease vary depending on the illness caused by the bacteria.
In adults, symptoms of pneumonia include sudden onset of illness characterized by shaking chills, fever, shortness of breath or rapid breathing, chest pain that is worsened by breathing deeply and a productive cough. The symptoms of pneumococcal meningitis include stiff neck, fever, mental confusion and disorientation, and photophobia (visual sensitivity to light). The symptoms of bloodstream infection may be similar to some of the symptoms of pneumonia and meningitis, along with joint pain, fever and chills.
In infants and young children, signs and symptoms of pneumonia may not be specific and may include fever, cough, rapid breathing or grunting. The symptoms of meningitis may vary depending on the age of the child, but may include diarrhea, vomiting and/or fever. In older children, meningitis symptoms may include headache, sensitivity to light and/or a stiff neck. Bloodstream infections typically have non-specific symptoms including fever and irritability. Children with otitis media typically have a painful ear. Other symptoms that may accompany otitis media include sleeplessness, fever and irritability.
Who should get pneumococcal disease vaccine?
Vaccination against pneumococcal disease is recommended for:
- Persons 65 years of age and older.
- Everyone 2 years of age and older with chronic medical conditions such as diabetes;, heart, kidney, liver or chronic lung diseases (excluding asthma*); or alcoholism.
- Those whose immune systems have been weakened by such conditions as cancer or HIV infection.
- People without a functioning spleen and those with sickle cell disease.
- Residents of chronic care or long-term care facilities.
- Children at 2, 4 and 6 months of age, followed by a booster dose at 12-15 months.
- Children aged 24-59 months who are at high risk for pneumococcal infection.
* While people with asthma can safely receive a pneumococcal vaccine, asthma alone is not a high-risk indication for pneumococcal vaccination.
The pneumococcal vaccines are safe and effective in preventing illness and death due to pneumococcal disease. Some adults have experienced mild side effects, but these are usually minor and last only a short time. When side effects do occur, the most common include swelling and soreness at the injection site. A few adults experience fever and muscle pain. In children, the conjugate vaccine may cause mild fever, fussiness and decreased appetite.
As with any medicine, there are very small risks that serious problems could occur after getting the vaccine. However, the potential risks associated with pneumococcal disease are much greater than potential risks associated with the pneumococcal vaccine.
Key Facts about Pneumococcal Disease and its Prevention
- Pneumococcal disease is an infection caused by bacteria called Streptococcus pneumoniae. These bacteria can invade the lungs, bloodstream and the tissues and fluids surrounding the brain and spinal cord, resulting in a number of different illnesses, including pneumonia and meningitis.
- Each year in the United States, there are an estimated 175,000 hospitalized cases of pneumococcal pneumonia, 34,500 cases of bacteremia and 2,200 cases of meningitis. Pneumococcal disease also results in approximately 4,800 deaths annually.
- Pneumococcal disease can be prevented among adults and children with two safe and effective vaccines, a conjugate vaccine for children under 2 years of age and a polysaccharide vaccine for children 2 years and older and for adults.
- You cannot get pneumococcal disease from the vaccine.
- Pneumococcal vaccine can be given at any time during the year and can be given at the same time as influenza vaccine.
- A single dose of pneumococcal vaccine is recommended for most persons 65 years or older. Some people who were younger than 65 when they received the vaccine may need a second dose at age 65.
- Only 56 percent of non-institutionalized adults 65 years of age or older and fewer than 20 percent of adults in other high-risk groups who should get the pneumococcal vaccine have received it.