What are the causes of pneumonia?treatment of pneumonia?

Bacterial or Viral: Depends on the cause. Most pneumonias are caused by a bacteria, and need antibiotics. Viruses can also sometimes cause pneumonias, but these are usually in both lungs, and not as severe. X-rays and blood work can usually tell this quickly and help determine the best treatment plan.

Infection/antibiotic: Pneumonia is an infection of the lungs, which can be caused by bacteria, viruses, or fungi. Somethings which predispose to pneumonia include impaired cough ( which may happen after surgery or after something like a stroke, weakened immune system, which may be seen with things like cancer chemo, or chronic lung disease. Treatment is antibiotics, support like supplemental oxygen if needed and time.