title: Risk of transmission of imipenem-resistantPseudomonas aeruginosa through use of mobile bathing service.
abstract: OBJECTIVE
  The demand for mobile bathing service (MBS) is increasing in the Japanese society. Therefore, we assessed the risk of MBS-associated infection in MBS clients and their caregivers by examining the bacterial colonization of MBS equipment and utensils.
  
  
  METHODS
  Bacterial isolates collected by the stamp agar culture method were examined by disk diffusion assay for their susceptibility to the following drugs: imipenem, ciprofloxacin, amikacin, azutreonam, ceftazidim, meropenem, piperacillin, tobramycin, ofloxacin and cefoperazone. Furthermore, these isolates were subtyped bySpeI-pulsed field gel electrophoresis (SpeI-PFGE).
  
  
  RESULTS
  Fifty-fourP. aeruginosa isolates were recovered from different sampling sites, and of these, 26 (47.3%) were isolated from pillows. Eighteen isolates (33.3%) were imipenem (IPM) resistant. The minimum inhibitory concentrations (MICs) of 17 isolates were between 16 and 32 μg/ml, and the MIC of one isolate was greater than 32 μg/ml. TheSpeI-PFGE typing of IPM-resistant isolates revealed that 13 of the 18 isolates were closely related (F=1.0-0.87).
  
  
  CONCLUSIONS
  Our findings suggest that MBS equipment and utensils, particularly pillows, are the primary sources of bacterial contamination and transmission and that there is a risk of MBS-mediated infection among MBS clients and their caregivers.
authors: Center for Medical Sciences School of Health Sciences, Ibaraki Prefectural University of Health Sciences, 4669-2 Ami, 300-0394, Inashiki, Ibaraki, Japan, sakurai@ipu.ac.jp.
authors: Naomi
authors: N
authors: Sakurai-Komada
authors: Masako
authors: M
authors: Hirano
authors: Ikumi
authors: I
authors: Nagata
authors: Yumi
authors: Y
authors: Ejima
authors: Michiko
authors: M
authors: Nakamura
authors: Kazuko A
authors: KA
authors: Koike