Peptostreptococcus morbillorum

Pep·to·strep·to·coc·cus mor·bil·lo·'rum

a bacterial species found in the nose, throat, eyes, ears, mucous secretions, and blood in cases of measles, being irrelevant, however, to the etiology of measles; probably present normally, developing as a secondary invader.

Synonym(s): Streptococcus morbillorum