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Clonal Distribution of Disease-Associated and Healthy Carrier Isolates of Neisseria meningitidis between 1983 and 2005 in Cuba
Climent, Yanet; Martinez, Isabel; Martín, Alejandro; Jolley, Keith A; Sotolongo, Franklin; Maiden Martin, C J; Urwin, Rachel; Pajón, Rolando.
Afiliação
  • Climent, Yanet; Finlay Institute. Department of Molecular Biology. Division of Biotechnology. Havana. Cuba
  • Martinez, Isabel; Finlay Institute. Department of Molecular Biology. Division of Biotechnology. Havana. Cuba
  • Martín, Alejandro; Center for Genetic Engineering and Biotechnology. Havana. Cuba
  • Jolley, Keith A; Department of Zoology. University of Oxford. Oxford. Estados Unidos
  • Sotolongo, Franklin; Finlay Institute. Department of Molecular Biology. Division of Biotechnology. Havana. Cuba
  • Maiden Martin, C J; University of Oxford. Department of Zoology. Oxford. Estados Unidos
  • Urwin, Rachel; University of Oxford. Department of Zoology. Oxford. Estados Unidos
  • Pajón, Rolando; Center for Genetic Engineering and Biotechnology. Havana. Cuba
J clin microbiol ; 48(3)Mar. 2010. graf
Article em En | CUMED | ID: cum-44308
Biblioteca responsável: CU1.1
ABSTRACT
In response to epidemic levels of serogroup B meningococcal disease in Cuba during the 1980s, the VA-MENGOC-BC vaccine was developed and introduced into the National Infant Immunization Program in 1991. Since then the incidence of meningococcal disease in Cuba has returned to the low levels recorded before the epidemic. A total of 420 Neisseria meningitidis strains collected between 1983 and 2005 in Cuba were analyzed by multilocus sequence typing (MLST). The set of strains comprised 167 isolated from disease cases and 253 obtained from healthy carriers. By MLST analysis, 63 sequence types (STs) were identified, and 32 of these were reported to be a new ST. The Cuban isolates were associated with 12 clonal complexes; and the most common were ST-32 (246 isolates), ST-53 (86 isolates), and ST-41/44 (36 isolates). This study also showed that the application of VA-MENGOC-BC, the Cuban serogroup B and C vaccine, reduced the frequency and diversity of hypervirulent clonal complexes ST-32 (vaccine serogroup B type-strain) and ST-41/44 and also affected other lineages. Lineages ST-8 and ST-11 were no longer found during the postvaccination period. The vaccine also affected the genetic composition of the carrier-associated meningococcal isolates. The number of carrier isolates belonging to hypervirulent lineages decreased significantly after vaccination, and ST-53, a sequence type common in carriers, became the predominant ST(AU)
RESUMEN
En respuesta a niveles de epidemia de meningitis meningocócica B en Cuba durante la década de 1980, la vacuna VA-MENGOC-BC se ha desarrollado e introducido en el Programa Nacional de Vacunación Infantil en 1991. Desde entonces, la incidencia de enfermedad meningocócica en Cuba ha vuelto a los bajos niveles registrados antes de la epidemia. Un total de 420 cepas de Neisseria meningitidis recogidos entre 1983 y 2005 en Cuba se analizaron escribiendo la secuencia multilocus (MLST). El conjunto compuesto por 167 de las cepas aisladas de casos de la enfermedad y 253 obtenidos a partir de portadores sanos. Mediante el análisis MLST, 63 tipos de secuencias (ST) fueron identificados, y 32 de estos fueron reportados a ser un nuevo ST. Se aislaron y se asociaron con 12 complejos clonales, y los más frecuentes fueron (36 aislamientos) ST-32 (246 aislamientos), ST-53 (86 aislamientos), y ST-41/44. Este estudio también mostró que la aplicación de VA-MENGOC-BC, el cubano al serogrupo B y la vacuna C, la reducción de la frecuencia y la diversidad de hipervirulenta complejos clonales ST-32 (la vacuna contra el serogrupo B de tipo tensión) y ST-41/44 y también afectados otros linajes. Linajes ST-8 y ST 11-ya no se encuentran en el período post-vacunación. La vacuna también se ve afectada por composición genética de la compañía meningocócica asociada a los aislados. El número de la compañía aislados pertenecientes a linajes hipervirulenta disminuyeron significativamente después de la vacunación, y ST-53, un tipo de secuencia común en las compañías, se convirtió en el ST predominante(AU)
Assuntos

Texto completo: 1 Coleções: 06-national / CU Base de dados: CUMED Assunto principal: Vacinação em Massa / Cuba / Vacinas Meningocócicas / Neisseria meningitidis Sorogrupo B Tipo de estudo: Risk_factors_studies Limite: Humans País/Região como assunto: Caribe / Cuba Idioma: En Revista: J clin microbiol Ano de publicação: 2010 Tipo de documento: Article

Texto completo: 1 Coleções: 06-national / CU Base de dados: CUMED Assunto principal: Vacinação em Massa / Cuba / Vacinas Meningocócicas / Neisseria meningitidis Sorogrupo B Tipo de estudo: Risk_factors_studies Limite: Humans País/Região como assunto: Caribe / Cuba Idioma: En Revista: J clin microbiol Ano de publicação: 2010 Tipo de documento: Article