Two papers in this issue (1, 2) concern cases of bacterial endocarditis caused by Rothia dentocariosa, an aerobic, nonmotile, non-spore-forming, pleomorphic, gram-positive coccal to rod-shaped bacterium (see Figure 1) often encountered by healthy medical students working with organisms from swabs of their throats (as part of a laboratory exercise called "the throat unknown"). The number of these off-white, smooth and creamy to rough and wrinkled colonies found by instructors examining primary outgrowths from the students' agar plates of rabbit's blood (inoculated from throat swabbings) has increased noticeably since our teaching laboratories obtained incubators with a controlled CO2-in-air atmosphere. Rothia dentocariosa
Identifying Rothia dentocariosa. Ann Intern Med. ;91:786–787. doi: 10.7326/0003-4819-91-5-786
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Published: Ann Intern Med. 1979;91(5):786-787.
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