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Power RF, Linnane B, Martin R, Power N, Harnett P, Casserly B, O'Connell NH, Dunne CP. The first reported case of Burkholderia contaminans in patients with cystic fibrosis in Ireland: from the Sargasso Sea to Irish Children. BMC Pulm Med 2016; 16:57. [PMID: 27103163 PMCID: PMC4840893 DOI: 10.1186/s12890-016-0219-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 04/12/2016] [Indexed: 12/26/2022] Open
Abstract
Background Burkholderia contaminans is an emerging pathogen in the cystic fibrosis (CF) setting. Included in the Burkholderia cepacia complex (Bcc), B. contaminans is a Gram negative, motile, obligate aerobe previously classified as a pseudomonad. Previous reports have described B. contaminans isolation from patients in Portugal, Switzerland, Spain, Argentina and the USA. This, however, is the first report relating to B. contaminans affecting Irish patients with CF, initially detected in a paediatric setting. Case presentation Burkholderia contaminans was identified in the routine analysis of sputum from a fourteen year old boy, at his annual review and subsequently from the sputum from his 19 year old brother. RecA gene sequencing and pulsed field gel electrophoresis (PFGE) were unable to distinguish between the isolates, which demonstrated with susceptibility to ciprofloxacin, cotrimoxazole, meropenem, pipercillin/tazobactam and ceftazidime. Both isolates were resistant to aztreonam, with reduced susceptibility to tobramycin. Following treatment with intravenous meropenem and ceftazidime, oral ciprofloxacin and nebulised tobramycin for 6 weeks, sputum specimens from both patients were negative for B. contaminans. No other member of the local CF cohort proved positive. Conclusions Bcc bacteria are associated with poor prognosis in CF and decreased life expectancy, specifically leading to a more rapid decline in lung function and, in some cases, to a fatal necrotizing pneumonia known as the “cepacia syndrome”. Some species exhibit innate resistance to multiple antimicrobial agents and their transmission rate can be high in susceptible patients. In that context, we describe the first incidence of CF-related B. contaminans in Ireland and its successful eradication from two patients, one paediatric, using an aggressive antimicrobial regimen.
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Affiliation(s)
- Rachel F Power
- Graduate Entry Medical School and Centre for Interventions in Infection, Inflammation & Immunity (4i), University of Limerick, Limerick, Ireland.,University Hospital Limerick, Dooradoyle, Limerick, Ireland
| | - Barry Linnane
- Graduate Entry Medical School and Centre for Interventions in Infection, Inflammation & Immunity (4i), University of Limerick, Limerick, Ireland.,University Hospital Limerick, Dooradoyle, Limerick, Ireland
| | - Ruth Martin
- University Hospital Limerick, Dooradoyle, Limerick, Ireland
| | - Noelle Power
- University Hospital Limerick, Dooradoyle, Limerick, Ireland
| | - Peig Harnett
- University Hospital Limerick, Dooradoyle, Limerick, Ireland
| | - Brian Casserly
- Graduate Entry Medical School and Centre for Interventions in Infection, Inflammation & Immunity (4i), University of Limerick, Limerick, Ireland.,University Hospital Limerick, Dooradoyle, Limerick, Ireland
| | - Nuala H O'Connell
- Graduate Entry Medical School and Centre for Interventions in Infection, Inflammation & Immunity (4i), University of Limerick, Limerick, Ireland.,University Hospital Limerick, Dooradoyle, Limerick, Ireland
| | - Colum P Dunne
- Graduate Entry Medical School and Centre for Interventions in Infection, Inflammation & Immunity (4i), University of Limerick, Limerick, Ireland.
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