03-03-2006, 09:56 AM
A 32-year-old man presents to the emergency room with a severe
headache. Nuchal rigidity is found on physical examination. Lumbar
puncture demonstrates cerebrospinal fluid with markedly increased
lymphocytes. Other cell populations are not increased. Which of
the following agents is the most likely cause of his symptoms?
A. Escherichia coli
B. Haemophilus influenzae
C. Herpes virus
D. Mycobacterium tuberculosis
E. Treponema pallidum
headache. Nuchal rigidity is found on physical examination. Lumbar
puncture demonstrates cerebrospinal fluid with markedly increased
lymphocytes. Other cell populations are not increased. Which of
the following agents is the most likely cause of his symptoms?
A. Escherichia coli
B. Haemophilus influenzae
C. Herpes virus
D. Mycobacterium tuberculosis
E. Treponema pallidum