What is dabo pneumonia (double pneumonia) and how does it affect the lungs?

Dabo pneumonia, or double pneumonia, is an infection that affects both lungs simultaneously. It works by inflaming the air sacs in the lungs (alveoli), causing them to fill up with fluid or pus. This inflammation and fluid buildup makes breathing difficult and can be particularly serious, especially for elderly patients like the 88-year-old Pope Francis. The condition has complicated the Pope's recovery, requiring hospitalization and likely more intensive treatment. Double pneumonia is generally more severe than pneumonia affecting only one lung, as it reduces oxygen capacity across the entire respiratory system.