Here's what pneumonia is, what causes it and how the disease is usually treated once it has been diagnosed.

A newly detected type of Klebsiella pneumoniae bacteria (in red) has acquired genes that make it more deadly. In the past few years, there have been so many "superbugs" appearing in hospitals around ...

Pneumonia is a life-threatening infection that leads to inflammation of the lung tissue, making it extremely hard for patients to breathe, and in some cases, it can even be fatal by cutting off the ...