Causes

Hospitals aren’t the only place you can get pneumonia. In fact, community-acquired pneumonia is actually more common. It affects people as they go about their everyday lives, outside of hospitals or health care settings. 
 
Pneumococcal pneumonia is one kind of community-acquired pneumonia. It is caused by common bacteria called Streptococcus pneumoniae that many people typically carry in their throats without getting sick. 
 
Even if you’re healthy, active, and take good care of yourself, it’s important to know you can still get pneumococcal pneumonia, anywhere, anytime.

Most cases of community-acquired pneumonia—including pneumococcal pneumonia—
are caused when people
inhale bacteria that
live in the mouth, nose,
or throat.