Medically reviewed by Jenny Sweigard, MD Key Takeaways Pneumonia is caused by bacteria, viruses, fungi, or inhaling foreign ...

Pneumonia is a common lung infection that can make breathing difficult and, in some cases, become life-threatening. It happens when the air sacs in the lungs fill with fluid or pus. Each year, about ...

As a medical oncologist, Dr. Michael Grant’s patients fall into this group. He spoke with us about how he protects his patients from pneumonia and what he suggests when they have unexplained symptoms.

Pneumonia infects millions of people every year. Cases of this highly contagious lung infection surged across all age groups in 2024, but young children were hit particularly hard. Infection rates in ...

Cases of "walking pneumonia" — a milder form of the lung infection pneumonia — have spiked in the United States, particularly among young children. Bacterial infections from Mycoplasma pneumoniae, one ...