What is Pneumocystis Pneumonia?
Pneumocystis pneumonia (PCP) is a lung infection. It is a form of pneumonia. PCP is caused by a fungus called Pneumocystis jiroveci . This used to be called Pneumocystis carinii .
This infection affects people who have a weakened immune system. It is the most common serious infection among people with AIDS .
PCP can be prevented.