Pneumonia is an infection of the lungs caused by bacteria, viruses, or fungi.
It can be caused by either bacterial pneumonia, viral pneumonia, or fungal pneumonia.
Hospital-acquired pneumonia (HAP) is a type of bacterial pneumonia that is acquired during a hospital stay.
Community-acquired pneumonia (CAP) is a type of pneumonia that is acquired outside of a medical or institutional setting.
Ventilator-associated pneumonia (VAP) is a type of pneumonia that can be caused when people who are using a ventilator get pneumonia.
Aspiration pneumonia is a type of pneumonia caused by inhaling bacteria from food, drink, or saliva.
Pneumonia can be divided into 2 main types, bronchopneumonia and lobar pneumonia.
Bronchopneumonia affects multiple areas throughout the lung and is not localized to specific lobe, while lobar pneumonia affects specific lobe in the lung and passes through 4 stages.
Congestion, red hepatization, gray hepatization, and resolution are all signs of pneumonia.

Test your knowledge about the different types and causes of pneumonia, including bacterial, viral, fungal, hospital-acquired, community-acquired, ventilator-associated, and aspiration pneumonia. Understand the characteristics of bronchopneumonia and lobar pneumonia and the stages of lobar pneumonia.