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151404 Microbiology

A 65-year-old man presents with fever, severe headache, and nuchal rigidity. Physical examination in the emergency depament shows a Glasgow coma score of 7. Lumbar puncture reveals cloudy cerebrospinal fluid (CSF) with 1200 neutrophils/mm3, elevated protein, and decreased glucose. Which of the following is the most probable etiologic agent of this condition?

AArbovirus
BHerpesvirus
CMycobacterium tuberculosis
DStreptococcus pneumoniae
Microbiology
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