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Table 2 Results for all participants tested from 0 to 12 months for colonisation with the targeted antimicrobial resistant organisms

From: Colonisation with ESBL-producing and carbapenemase-producing Enterobacteriaceae, vancomycin-resistant enterococci, and meticillin-resistant Staphylococcus aureus in a long-term care facility over one year

  Proportion colonised (%)
Resistance phenotype July 2012f October 2012f January 2013f May 2013f August 2013f Any time point
ESBL-EC a 20/51 (39%) 21/51 (41%)7 14/50 (28%) 21/49 (43%)7 19/45 (42%)7 35/64 (55%)
ESBL - KP b 0/51 (0%) 2/51 (4%) 0/50 (0%) 2/49 (4%) 2/45 (4%) 5/64 (8%)
CPE c 0/51 (0%) 0/51 (0%) 0/50 (0%) 0/49 (0%) 0/45 (0%) 0/64 0%)
VRE d 0/51 (0%) 0/51 (0%) 1/50 (2%) 1/49 (2%) 1/45 (2%) 2/64 (3%)
MRSA e 8/51 (16%) 9/51 (18%) 7/50 (14%) 7/49 (14%) 4/45 (9%) 17/64 (27%)
Any of above 24/51 (47%) 25/51 (49%) 17/50 (34%) 23/49 (47%) 20/45 (44%) 39/64 (61%)
  1. aESBL-EC; Extended-spectrum beta-lactamase producing-Escherichia coli.
  2. bESBL-KP; Extended-spectrum beta-lactamase-producing-Klebsiella pneumoniae.
  3. cCPE; Carbapenemase-producing Enterobacteriaceae.
  4. dVRE; Vancomycin-resistant enterococci.
  5. eMRSA; Meticillin-resistant Staphylococcus aureus.
  6. fNumber of participants tested at each interval varied, accounting for participants who died, withdrew from the study, or newly joined the study.
  7. gOne resident had an ESBL-EC positive urine and rectal culture.