National Center for Biotechnology Information NCBI NLM MEDLINE Asia humans pubmed abstract nih national institutes of health national library of medicine research support non-u.s. gov't female male Child Infant Comparative Study preschool Incidence polymerase chain reaction sensitivity and specificity latex fixation tests meningitis microbial bacteriological techniques pneumococcal / cerebrospinal fluid* streptococcus pneumoniae / isolation & purification colony count pmid:17274856 pmc2870670 doi:10.1017/s0950268806007734 w a kennedy s-j chang j i ward cerebrospinal fluid / microbiology* haemophilus influenzae type b / isolation & purification haemophilus / cerebrospinal fluid*