Streptococcus pneumoniae

**Definition:** A gram-positive organism found in the upper respiratory tract, inflammatory exudates, and various body fluids of normal and/or diseased humans and, rarely, domestic animals.

**Tree numbers:** - B03.353.750.737.872.550 - B03.510.400.800.872.550 - B03.510.550.737.872.550

**Synonyms:** - Diplococcus pneumoniae - Pneumococcus