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Revista argentina de microbiología

versión On-line ISSN 1851-7617

Resumen

CHIAVETTA, L. et al. Surveillance of Neisseria meningitidis in Argentina, 1993-2005: Distribution of serogroups, serotypes and serosubtypes isolated from invasive disease. Rev. argent. microbiol. [online]. 2007, vol.39, n.1, pp. 21-27. ISSN 1851-7617.

Neisseria meningitidis is an important cause of meningitis, bacteremia and septic shock syndrome. We herein present the distribution of serogroups, serotypes and serosubtypes of 2244 isolates of N. meningitidis from patients with meningitis or meningococcemia, received within the period 1993-2005, in the National Reference Laboratory, INEI-ANLIS "Dr. Carlos G. Malbrán", from 33 Argentine hospitals that are included in a National Network devoted to for the study of bacterial meningitis. Between 1993-1995, serogroup B was prevalent (66%) whereas in the period from 1995-2001, serogroup C prevailed (65%). However, following but after that period, the prevalence of serogroup B was recovered. In the last 5 years of the studied period, the serogroups Y and W135 represented as a whole a 15.6% as a whole whereas up to the year 2000 during the first 6 years they accounted for it was of 4.7%. Higher diversity in the distribution of serotypes and serosubtypes was observed within serogroup B. The nonsubtypable isolates throughout the period of study represented the 52.8%, this high percentage demonstrates the limited capacity of the serotyping for the determination of meningococcal/meningococcus subtypes. of meningococco.

Palabras llave : Neisseria meningitidis; serogroup; serotypes; serosubtypes; surveillance.

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