Pneumonia is a Streptococcus pneumoniae (commonly known as "strep") bacterial infection, which is usually in your lungs. It can also be caused by the flu virus, the common cold virus, or a fungal ...

Pneumonia typically occurs when a person acquires a viral, bacterial, or fungal lung infection. A cough is a common symptom of pneumonia. However, a person can have the condition without a cough.

Pneumonia is an infection of the lungs. Viruses, bacteria, and fungi can cause it. Pneumonia can cause the small air sacs in your lungs, known as alveoli, to fill with fluid. Pneumonia can be a ...

Pneumonia is the medical term for inflammation of one or both lungs. The condition can occur as a result of a viral, bacterial, or fungal infection. Symptoms depend partly on the person’s age and the ...

Pneumonia is a lung infection that can lead to serious complications in children. The illness may present differently in children than it does in adults. Pneumonia is an infection of the lungs caused ...