1. Pneumonia occurring in infants or in persons with impaired immune systems (as AIDS victims)
   - pneumocystis pneumonia, pneumocystis carinii pneumonia, interstitial plasma cell pneumonia

Type of: pneumonia

• barrel organ
• barrel roll
• barrel vault
• barrel-shaped
• barreled
• barrelfish
• barrelful
• barrelhead
• barrelhouse
• barrelled
• barrels
• barren
• barren ground caribou
• barrenness
• barrenwort
• barrette
• barretter
• barricade
• barricaded
• barricado
• Barrie
• barrier
• barrier island
• barrier reef
• barrier strip