title: Biotypes and serotypes of Haemophilus influenzae from patients with meningitis in the city of São Paulo, Brazil.
abstract: A total of 1,094 Haemophilus influenzae isolates from cerebrospinal fluid were examined by biochemical and serological means. Most of them belonged to biotype I (70.9%) and to serotype b (99.4%). The relationship of biotypes I and II to the ages of the patients was shown to be significant (P < 0.001).
authors.affiliation: Secão de Bacteriologia, Instituto Adolfo Lutz, São Paulo, Brazil.
authors.forename: I M
authors.initials: IM
authors.lastname: Landgraf
authors.forename: M F
authors.initials: MF
authors.lastname: Vieira
mesh_terms: D000293:Adolescent; D000328:Adult; D015373:Bacterial Typing Techniques; D001938:Brazil / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D006193:Haemophilus influenzae / Q000145:classification* / Q000302:isolation & purification; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D016920:Meningitis, Bacterial / Q000453:epidemiology / Q000209:etiology / Q000382:microbiology*; D008583:Meningitis, Haemophilus / Q000453:epidemiology; D008585:Meningitis, Meningococcal / Q000453:epidemiology; D008586:Meningitis, Pneumococcal / Q000453:epidemiology; D009313:National Health Programs; D012703:Serotyping