Long-term contamination of sink drains by carbapenemase-producing Enterobacterales in three intensive care units: characteristics and transmission to patients

J Hosp Infect. 2021 Jun:112:16-20. doi: 10.1016/j.jhin.2021.02.016. Epub 2021 Feb 23.

Abstract

This study aimed to describe the contamination of sink drains (SDs) with carbapenemase-producing Enterobacterales (CPE) in three intensive care units (ICUs), and to assess the risk of transmission to hospitalized patients. All SDs were sampled monthly for CPE screening by culture. Rectal screening for CPE carriage was conducted weekly for hospitalized patients. CPE were isolated from 22% of SD samples. Some SDs remained colonized with the same strain for several months. No CPE acquisition occurred among hospitalized patients during the study. Certain strategies, such as systematic sampling of SDs in ICUs for screening for contamination by CPE, should be discouraged apart from during outbreaks.

Keywords: Carbapenemase-producing Enterobacterales; Cross-transmission; Environment; Intensive care; Widespread contamination.

MeSH terms

  • Bacterial Proteins
  • Disease Outbreaks
  • Enterobacteriaceae Infections* / diagnosis
  • Enterobacteriaceae Infections* / epidemiology
  • Enterobacteriaceae Infections* / prevention & control
  • Humans
  • Intensive Care Units
  • beta-Lactamases*

Substances

  • Bacterial Proteins
  • beta-Lactamases
  • carbapenemase