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Population structure of invasive Neisseria meningitidis in the United States, 2011-15.
Potts, Caelin C; Joseph, Sandeep J; Chang, How-Yi; Chen, Alexander; Vuong, Jeni; Hu, Fang; Jenkins, Laurel T; Schmink, Susanna; Blain, Amy; MacNeil, Jessica R; Harrison, Lee H; Wang, Xin.
Afiliação
  • Potts CC; National Center for Immunization and Respiratory Disease, CDC, Atlanta, GA, USA.
  • Joseph SJ; National Center for Immunization and Respiratory Disease, CDC, Atlanta, GA, USA.
  • Chang HY; National Center for Immunization and Respiratory Disease, CDC, Atlanta, GA, USA.
  • Chen A; National Center for Immunization and Respiratory Disease, CDC, Atlanta, GA, USA.
  • Vuong J; National Center for Immunization and Respiratory Disease, CDC, Atlanta, GA, USA.
  • Hu F; National Center for Immunization and Respiratory Disease, CDC, Atlanta, GA, USA.
  • Jenkins LT; National Center for Immunization and Respiratory Disease, CDC, Atlanta, GA, USA.
  • Schmink S; National Center for Immunization and Respiratory Disease, CDC, Atlanta, GA, USA.
  • Blain A; National Center for Immunization and Respiratory Disease, CDC, Atlanta, GA, USA.
  • MacNeil JR; National Center for Immunization and Respiratory Disease, CDC, Atlanta, GA, USA.
  • Harrison LH; Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
  • Wang X; National Center for Immunization and Respiratory Disease, CDC, Atlanta, GA, USA. Electronic address: gqe8@cdc.gov.
J Infect ; 77(5): 427-434, 2018 11.
Article em En | MEDLINE | ID: mdl-29964139
ABSTRACT

OBJECTIVES:

Meningococcal conjugate vaccines (MenACWY) were licensed in the United States in 2005. We assessed the population structure of invasive Neisseria meningitidis (Nm) ten years after recommended use of MenACWY among adolescents.

METHODS:

Meningococcal isolates obtained through Active Bacterial Core surveillance (ABCs) from 2000-05, 2006-10, and 2011-15 underwent whole genome or Sanger sequencing. Genome phylogenies were completed using maximum likelihood methods; and distribution of multilocus sequence typing (MLST) sequence type (ST) and clonal complex (CC), and PorA and FetA types were assessed.

RESULTS:

Prevalent serogroups (B, C, Y and W), CCs, and PorA and FetA types were detected in all three time periods, but dynamic changes were observed. The proportion of serogroup W CC11 isolates increased in 2011-15 and were most related to South American strains. Changes in CC distribution were also observed in serogroup C and serogroup Y. Phylogenetic analysis showed that U.S. serogroup W CC11s are closely related to a subset of U.S. serogroup C isolates; combined global analysis demonstrated that some CCs, including CC11, exhibit regional clustering.

CONCLUSIONS:

Overall, the Nm population structure has remained stable after MenACWY introduction. Dynamic changes in genotypes, unlikely related to vaccination, also occurred, highlighting the need for continued whole genome-based surveillance.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Genoma Bacteriano / Infecções Meningocócicas / Neisseria meningitidis Idioma: En Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Genoma Bacteriano / Infecções Meningocócicas / Neisseria meningitidis Idioma: En Ano de publicação: 2018 Tipo de documento: Article