Pneumonia

Pneumonia is an inflammatory disease of the lung-especially affecting the microscopic air sacs (alveoli)-associated with fever, chest symptoms and lack of air space (consolidation) on a chest radiograph. Pneumonia is usually caused by an infection, but there are a number of other causes. Infectious agents are bacteria, viruses, fungi and parasites.
Typical symptoms include cough, chest pain, fever and difficulty breathing. Diagnostic tools include X-rays and sputum tests. Vaccines to prevent certain types of pneumonia are available. Treatment depends on the underlying cause with presumed bacterial pneumonia can be treated with antibiotics.
Although pneumonia was regarded by William Osler in the nineteenth century, "the captain of the men of death", the advent of antibiotic therapy and vaccines in the twentieth century, has brought better results with regard to survival. However, in the third world and among the very old, the very young and the chronically ill, pneumonia remains a leading cause of death.
Treatment
It is important to follow the treatment plan, take all medications as prescribed, and have follow-up medical care. Although the patient may begin to feel better in a few days or weeks, fatigue may persist for a month or more. People treated in hospital may need at least three weeks before returning to normal routine.
Prevention
Pneumonia can be very serious and even fatal. When possible, take steps to prevent infection, especially if you're in the high risk group.