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Table 2 VRE-positive patients and contact patients (CoPat) stratified by VRE vanA/B and risk type

From: Patients exposed to vancomycin-resistant enterococci during in-hospital outbreaks in a low endemic setting: a proposal for risk-based screening

 

Overall

High risk1

Medium risk2

Low risk3

“staff”4

p value*

VRE vanA/vanB

Number of patients at risk, N

1096

280

342

430

44

 < 0.001

VRE-positive patients, N (%)

25 (2.3)

22 (7.9)

2 (0.6)

0 (0)

1 (2.3)

VRE vanA ST375

Number of patients at risk, N

681

120

295

262

4

 < 0.001

VRE-positive patients, N (%)

8 (1.2)

6 (5.0)

2 (0.7)

0 (0)

0 (0.0)

VRE vanB ST117

Number of patients at risk, N

486

169

89

188

40

 < 0.001

VRE-positive patients, N (%)

17 (3.5)

16 (9.5)

0 (0)

0 (0)

1 (2.5)

  1. Some patients were exposed to both VRE vanA ST375 and vanB ST117 (see Fig. 1)
  2. 1High risk: sharing the same room or bathroom with a VRE-colonized patient
  3. 2Medium risk: hospitalization in the same room immediately after a VRE-colonized patient’s discharge until terminal disinfection including UVc disinfection
  4. 3Low risk: sharing the same room within 3 weeks before the VRE-colonized patient was hospitalized in index room
  5. 4Same medical care team: all patients screened because of clinical suspicion during the outbreak by having the same medical care team as the index patient and therefore being screened with ward-wide screenings
  6. *Cochran-Armitage test for linear trends