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150.
Pleocytosis of 600 cell/µl, with high neutrophil prevalence, high protein concentration (1.5 g/l), high lactic acid concentration, and decreased glucose concentration (decreased cerebrospinal fluid-to-serum ratio) in cerebrospinal fluid analysis points to:
1) bacterial meningitis;
2) viral meningitis;
3) tuberculous meningitis;
4) a necessity for immediate antibiotic therapy;
5) a necessity for antibiotic therapy after positive cerebrospinal fluid culture is obtained.
The correct answer is: