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Table 1 ESBL contamination of hands pre- and post-handwashing, by healthcare worker or caregiver, and sampling event

From: Characterizing the bioburden of ESBL-producing organisms in a neonatal unit using chromogenic culture media: a feasible and efficient environmental sampling method

  Sampling event #1 Sampling event #2 Sampling event #3
Healthcare worker hands
Pre-wash contaminated 29% (7/24) 40% (2/5) 45% (5/11)
Post-wash contaminated 38% (9/24)* 20% (1/5) 18% (2/11)
Caregiver hands
Pre-wash contaminated 85% (11/13) 55% (11/20) 63% (5/8)
Post-wash contaminated 55% (6/11) 53% (8/15) 38% (3/8)
  1. *Contamination among healthcare workers increased during the first sampling event, with Pseudomonas spp. accounting for most post-wash cultures
  2. Some participants were lost to follow-up to obtain post-wash swabs