Discussion
Which of the following bacteria is gram-negative cocci?
Answer: A
Correct answer: Veillonella
Veillonella are the only anaerobic Gram-negative cocci of medical note, occurring as small diplococci in the mouth, intestine and vagina and appearing in mixed anaerobic infections. Peptococcus and Peptostreptococcus are the anaerobic Gram-positive cocci, and Sporosarcina is a spore-forming Gram-positive coccus. The Gram reaction is the whole of the answer here, and Veillonella is the name to attach to it.
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