Pneumonia is a lung infection and a serious illness that can lead to hospitalization or even death. Pneumonia is usually caused by bacteria, but it can also be caused by viruses, fungi or other organisms. It can occur as a single infection or in combination with other infections, such as bronchitis or the flu.
1Early Signs of pneumonia
When a person has pneumonia, their body temperature may spike and they may develop a fever. This is because pneumonia is caused by a bacterial or viral infection, which can cause the body’s temperature to rise. A fever is not always present in people with pneumonia, but it is a common symptom.