Published on July 8, 2009
Brian Kieth C. Gonzales
What is pneumonia? Pneumonia is an infection or inflammation of the lung, and can be caused by nearly any class of organism known to cause human infections, including bacteria, viruses, fungi, and parasites.
Different organisms are more frequently encountered by different age groups. Viruses cause the majority of pneumonias in young children (especially respiratory syncytial virus, parainfluenza and influenza viruses, and adenovirus). Adults are more frequently infected with bacteria (such as Streptococcus pneumoniae, Haemophilus influenzae, and Staphylococcus aureus). Pneumonia in older children and young adults is often caused by the bacteria-like Mycoplasma pneumoniae .
Bacterial Pneumonia Bacterial pneumonia is an infection that causes irritation, swelling, and congestion in the lungs. It is also called bacterial pneumonitis.
Viral Pneumonia is an infection or inflammation of the lungs. It can be in just one part of the lungs, or it can involve many parts.
Mycoplasmal pneumonia It is a type of atypical pneumonia. It is caused by the bacteria M. pneumoniae. This type of pneumonia usually affects people younger than 40.
Pneumocystis Pneumonia (PCP) A fungal infection of the lungs that is particularly common and life-threatening in premature or malnourished infants and in immunosuppressed persons. Pneumocystis pneumonia (PCP) is the most common opportunistic infection in people infected with HIV (human immunodeficiency virus).
Symptoms of Pneumonia With bacterial pneumonia, the person may experience:shakingchillschattering teethsevere chest paincough that produces rust-colored or greenish mucusvery high feversweatingrapid breathingrapid pulse rate
With bacterial pneumonia, the person may experience:
severe chest pain
cough that produces rust-colored or greenish mucus
very high fever
rapid pulse rate