When looking at pneumonia, you need to note that there are several conditions and organisms that are responsible for causing this lung infection. Pneumonia can be caused by several agents including bacteria, viruses, and fungi among other agents. In fact, it is because of the variety of causes of Pneumonia that in certain instances, it becomes very difficult to tell the exact cause. Below is an in-depth analysis on some of the causes of pneumonia:
This is the major cause of pneumonia that most people will always refer to. There are two categories of bacteria that are highlighted by health experts to cause the infection. These are the Gram-negative and the Gram-positive. The significant difference that lies between these two categories of pneumonia-causing bacteria is in their colors that can be determined in the laboratory. This is what indicates the severity of the infection. The Gram-positive bacteria are usually blue and the most common. They include Streptococcus pneumoniae, Staphylococcus aureus and Streptococcus pyogenes bacteria. The Gram-negative have got a pink color and are mostly infect hospitalized people. They include Haemophilus influenzae, Klebsiela Pneumoniae, Pseudomonas aeruginosa among others.
These organisms are also known to cause pneumonia. However, the kind of pneumonia that is caused by viruses is typically known to be resistant to antibiotic treatments which are contrary to the kinds of pneumonia caused by bacteria. Some of the viruses that case pneumonia include Adenoviruses, Rhino, Influenza, respiratory syncytial, and parainfluenza viruses.
Apart from bacteria and viruses, there are also certain fungi that can cause pneumonia like Coccidiomycois, Histoplasmosis, Aspergillosis and Cryptococcosis. However, the kinds of pneumonia that is caused buy these agents are not very common.
There may also be other causes of pneumonia like the exposure to irritant chemicals. Such causes are known as occupational causes.