A 2-week-old baby boy is hospitalized with fever, poor feeding, and lethargy
Laboratory results to date include:
Blood cultures: negative to date
Cerebrospinal fluid:
4200 WBC/l with 95% neutrophils
Glucose: 2 mg/dl
Protein: 355 mg/dl
Direct Gram stain: few small gram-positive coccobacilli and moderate WBCs
Direct bacterial latex agglutination:
H. influenzae type b, N. meningitidis serogroups A, C, Y, and W135, S. pneumoniae, Group B Streptococcus, and E. coli K1 — All negative
CSF culture at 24 hours: moderate growth of a gray, white colony with a narrow zone of
beta-hemolysis
You would expect this organism to be
A) catalase positive. B) CAMP negative.
C) esculin negative. D) sodium hippurate negative.
A
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