VIM-Positive Pseudomonas aeruginosa Sink Colonization Dynamics in Patient Rooms of a Dutch Tertiary-Care Hospital

Background: In hospitals, Verona integron-encoded metallo-β-lactamase (VIM)–positive Pseudomonas aeruginosa (VPPA) frequently colonize sink drains. Sink use has been shown to disperse VPPA to other surfaces surrounding sinks, creating a potential transmission source. Objective: Because VPPA have been isolated from sinks and patients within our hospital, we analyzed colonization dynamics in 2 sinks identified as VPPA hot spots between 2012 and 2018. Methods: One sink was in an intensive care unit (ICU) patient room and the other was in a gastrointestinal surgery (GIS) patient room. ICU patients... Mehr ...

Verfasser: Pirzadian, Jannette
Klaassen, H.W.
Goeij, Inge de
Vos, Margreet C.
Severin, tte A.
Dokumenttyp: Artikel
Erscheinungsdatum: 2020
Reihe/Periodikum: Infection Control & Hospital Epidemiology ; volume 41, issue S1, page s432-s433 ; ISSN 0899-823X 1559-6834
Verlag/Hrsg.: Cambridge University Press (CUP)
Schlagwörter: Infectious Diseases / Microbiology (medical) / Epidemiology
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-27076242
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : http://dx.doi.org/10.1017/ice.2020.1095

Background: In hospitals, Verona integron-encoded metallo-β-lactamase (VIM)–positive Pseudomonas aeruginosa (VPPA) frequently colonize sink drains. Sink use has been shown to disperse VPPA to other surfaces surrounding sinks, creating a potential transmission source. Objective: Because VPPA have been isolated from sinks and patients within our hospital, we analyzed colonization dynamics in 2 sinks identified as VPPA hot spots between 2012 and 2018. Methods: One sink was in an intensive care unit (ICU) patient room and the other was in a gastrointestinal surgery (GIS) patient room. ICU patients were screened for VPPA on admission, at discharge, and weekly during hospitalization. GIS patients were screened for VPPA only on clinical indication. In this study, patient and sink isolates were typed at 8 loci using multiple-locus variable-number tandem repeat (VNTR) analysis (MLVA). Results: Overall, 19 sink isolates from the ICU room were included. In 2013, VPPA isolates with identical VNTR genotypes (“clone B ,” VNTR nos. 2-4-8-4-4-5-10-[-2]) were found in the wash basin, aerator, drain, and siphon. The drain plug was replaced in August 2013, but B was isolated from the drain 1 month later. Every year between 2014 and 2018, clone B and other closely related genotypes were recovered from this drain. In 2018, clone B was also found on the wash basin and counter. No positive patients were identified in this room until 2016, when a patient acquired clone B 6 days after admission. From the GIS room, 6 sink isolates and 4 patients’ isolates were included. In 2012, clone B was found on the wash basin and sink drain plug. Also, 3 VPPA-positive patients stayed in this room in 2012: at discharge, 1 patient was colonized by “clone A ,” VNTR numbers 6-7-8-5-9-8-6-1. Furthermore, 2 other patients screened positive for clone B prior to admission in 2012, so they likely acquired VPPA elsewhere. The drain plug was replaced in 2013, and no VPPA was found again until 2017, when 2 VPPA-positive patients stayed in this room: 1 was ...