Meningitis Can Be Caused by a Number of Microbes, and the Causative

Meningitis can be caused by a number of microbes, and the causative organism is often identi?ed by microscopic observation of the cerebrospinal ?uid. Identify the mismatch in the following list of organisms and the description of the microscopic observation.

A) Neisseria meningitidis; gram-negative diplococcus
B) Streptococcus pneumoniae; gram-positive ?attened coccus
C) Cryptococcus neoformans; fungal cells with a thick capsule
D) Listeria monocytogenes; gram-negative coccobacillus with ?agella
E) Enterovirus; no bacteria appear to be present in CSF