By far the most frequent exciting causes of acute otitis media are the pneumococcus and the streptococcus.
The bacteria were chiefly staphylococci, rarely the pneumococcus or the micrococcus catarrhalis.
Another interesting feature about the pneumococcus is its vitality outside of the body.
Cultivations from the heart blood gave a pure growth of a typical (capsulated) pneumococcus.
Widely present as the pneumococcus is, we know well that it is powerless for harm except in unhealthful surroundings.
Recognition of the pneumococcus depends upon its morphology, the fact that it is Gram-staining, and the presence of a capsule.
Various organisms have been found in other forms of meningitis—the pneumococcus most frequently.
Also the pneumococcus, though often present, must be raised in virulence before it can produce untoward results.
pneumococcus pneu·mo·coc·cus (nōō'mə-kŏk'əs, nyōō'-)
n. pl. pneu·mo·coc·ci (-kŏk'sī', -kŏk'ī')
A nonmotile, gram-positive bacterium (Streptococcus pneumoniae) that is the most common cause of bacterial pneumonia and is associated with meningitis and other infectious diseases.