For the second half of the 19th century and the early part of the 20th, pneumonia was a leading cause of death that killed hundreds of thousands of people. Sir William Osler – usually considered the ...

Pneumonia is a lung infection that can be caused by a number of different organisms, including bacteria, viruses, and fungi. It happens when your immune system isn't able to prevent these organisms ...

Does it feel like almost everyone you know is sick right now? Here’s what’s going around — and how to avoid catching it.

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 ...