A child's cerebrospinal fluid (CSF) analysis shows slightly elevated or normal polymorphonuclear (PMN) cells, increased lymphocytes, no fungal growth, normal or elevated protein levels, and normal glucose concentration. What is the most likely diagnosis?

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Bacterial meningitis caused by pus-forming bacteriaMeningitis of viral originMeningitis due to fungal infectionMeningitis caused by tuberculosisParasitic meningitis

Explanation

The CSF profile with normal or slightly increased PMNs, elevated lymphocytes, absence of fungal growth, normal or high protein, and normal glucose is characteristic of viral meningitis. Bacterial meningitis typically shows high PMNs and low glucose, fungal meningitis often has fungal growth and low glucose, and tuberculous meningitis usually presents with low glucose and elevated protein.