Causes of Pneumonia If you are sick, you may be wondering what the main causes of pneumonia are. These include bacterial, viral, and mycoplasma infections. Learn the causes of each of these conditions, and learn how to treat them. Once you have a basic understanding and treatment of pneumonia, you’ll be better equipped to deal with the illness. If you are unsure of what you have, check out these helpful articles. They can explain the different types of pneumonia and the treatments available for them. Viral pneumonia Viral pneumonia is a highly infectious disease. It is com ...   read more