Show simple item record

dc.contributor.authorMulhall, Robert M
dc.contributor.authorBrehony, Carina
dc.contributor.authorO'Connor, Lois
dc.contributor.authorMeyler, Kenneth
dc.contributor.authorJolley, Keith A
dc.contributor.authorBray, James
dc.contributor.authorBennett, Desiree
dc.contributor.authorMaiden, Martin C J
dc.contributor.authorCunney, Robert
dc.date.accessioned2019-10-03T15:48:44Z
dc.date.available2019-10-03T15:48:44Z
dc.date.issued2016-01-01
dc.identifier.issn1098-660X
dc.identifier.pmid27629899
dc.identifier.urihttp://hdl.handle.net/10147/626848
dc.description.abstractA carriage study was undertaken (n 112) to ascertain the prevalence of Neisseria spp. following the eighth case of invasive meningococcal disease in young children (5 to 46 months) and members of a large extended indigenous ethnic minority Traveller family (n 123), typically associated with high-occupancy living conditions. Nested multilocus sequence typing (MLST) was employed for case specimen extracts. Isolates were genome sequenced and then were assembled de novo and deposited into the Bacterial Isolate Genome Sequencing Database (BIGSdb). This facilitated an expanded MLST approach utilizing large numbers of loci for isolate characterization and discrimination. A rare sequence type, ST-6697, predominated in disease specimens and isolates that were carried (n 8/14), persisting for at least 44 months, likely driven by the high population density of houses (n 67/112) and trailers (n 45/112). Carriage for Neisseria meningitidis (P < 0.05) and Neisseria lactamica (P < 0.002) (2-sided Fisher’s exact test) was more likely in the smaller, more densely populated trailers. Meningococcal carriage was highest in 24- to 39-year-olds (45%, n 9/20). Evidence of horizontal gene transfer (HGT) was observed in four individuals cocolonized by Neisseria lactamica and Neisseria meningitidis. One HGT event resulted in the acquisition of 26 consecutive N. lactamica alleles. This study demonstrates how housing density can drive meningococcal transmission and carriage, which likely facilitated the persistence of ST-6697 and prolonged the outbreak. Whole-genome MLST effectively distinguished between highly similar outbreak strain isolates, including those isolated from person-toperson transmission, and also highlighted how a few HGT events can distort the true phylogenetic relationship between highly similar clonal isolates.en_US
dc.language.isoenen_US
dc.subjectMENINGITISen_US
dc.subjectEPIDEMIOLOGYen_US
dc.subjectGENE TRANSFERen_US
dc.titleResolution of a Protracted Serogroup B Meningococcal Outbreak with Whole-Genome Sequencing Shows Interspecies Genetic Transfer.en_US
dc.typeArticleen_US
dc.description.provinceLeinsteren_US
dc.description.peer-reviewpeer-reviewen_US
dc.source.journaltitleJournal of clinical microbiology
refterms.dateFOA2019-10-03T15:48:44Z


Files in this item

Thumbnail
Name:
j. clin. microbiol.-2016-mulha ...
Size:
1.406Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record