Kingella denitrificans, which is nonhemolytic and tends to pit the agar, also grows on selective media that support the growth of which gram-negative diplococci?

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Kingella spp.are catalase-negative, which helps separate them from Neisseria spp.(see Chapter 40), with which they are sometimes confused.K.denitrificans may be mistaken for N.gonorrhoeae when isolated from modified Thayer-Martin agar.Nitrate reduction is a key test in differentiating K.denitrificans from N.gonorrhoeae, which is nitrate-negative.

Kingella Denitrificans, Which Is Nonhemolytic and Tends to Pit the Agar