A Gram negative bacillus was isolated from the CSF of an inf…
A Gram negative bacillus was isolated from the CSF of an infant in the neonatal ICU. The infant was born 18 days ago at an estimated gestational age of 27 weeks. Biochemical reactions demonstrate the following: TSI = acid/acid no H2S Lysine decarboxylase = purple Indole = positive Arginine dihydrolase = yellow Citrate = peacock blue Ornithine decarboxylase = yellow MR/VP = 0/+ Decarboxylase base = yellow Urea = Magenta pink PAD = Negative Motility = Negative The most likely genus and species of this organism is:
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