what are the differences in chemical and cellular and culture results in cerebrospinal fluid (CSF) between viral and bacterial meningitis. Can the presence of bacteria be detected before culture and sensitivities are done? How? How about viruses?

what are the differences in chemical and cellular and culture results in cerebrospinal fluid (CSF) between viral and bacterial meningitis. Can the presence of bacteria be detected before culture and sensitivities are done? How? How about viruses?