04-03-2007, 08:41 AM
A very ill 14-month-old boy was seen in the ER with a stiff neck and a fever. A lumbar puncture was done which showed a cerebrospinal fluid nucleated cell count of 5,000/ml with 95% PMNs. His WBC was 15,000 cells per ml. CSF and blood cultures were positive for a small gram-negative coccobacillus that required both X and V factors for growth. An important antiphagocytic virulence trait of this pathogen consists of:
A)dextran
B)hyaluronic acid
C)N-acetylglucosamine
D)polyglutamic acid
E)polyribitol phosphate
A)dextran
B)hyaluronic acid
C)N-acetylglucosamine
D)polyglutamic acid
E)polyribitol phosphate