Viridans streptococcal pneumonia.
D006801:Humans; D011014:Pneumonia / Q000382:microbiology*; D013290:Streptococcal Infections / Q000382:microbiology*; D013291:Streptococcus / Q000145:classification / Q000302:isolation & purification*; D013492:Suppuration / Q000382:microbiology