Table 2. Culture Results for the 29 Long-Term Care Facility (LTCF) Residents with Asymptomatic Carriage of Toxigenic Clostridium difficile, Stratified by Those with ≥1 Transfer to the Hospital versus No Transfersa
Patient No.
REA group/prior CDI (Yes/No)
2b 3 4 5 6 7 8 9
10 11
DQ/No BI/No
2/15
Transferred to hospital during study (N=11) 1
+ R,G,E
N1p/No BI/Yesc BI/Yes DQ/No
Nonspecific/Yesc BI/Yes DQ/No BI/No
DH2/No
Not transferred to hospital during study (N=18) 1 2 3 4 5 6 7 8 9
DQ/No BI/Yesc
Nonspecific/No DH1/No BM/No DQ/No BI/No BI/No
10 11 12 13 14 15 16 17 18
BK/Yesc BI/No
Nonspecific/No BI/No
DQ/Yes BI/No BI/No BI/No
SH2/Yesb Y/No
CDI
+ R,G + R,G + R,G
ND −− + R,G + R,G + R,G,S,E
+ R,G -
+ R − ND −
+R −− + R
+ R + R
+ R,G + R,E ND −−
+R −
ND
+ R,S,E +R
+ R −
+ R,E +R +R
+R ND
+ R ND
ND ND
ND ND
+R ND + R,G −
+R +R
− ND ND − ND ND − − ND −− + R
− −
− CDI 3/1
Hospital −
ND + R,G + R,G,S 3/15
+R +R
+ R,G
Hospital + R,G
+ R,G,S,E CDI 4/1
+ R,S,G,E + R,E
Home
+ R,G,S ND
+ R,G,S,E 4/15 5/1 5/15 6/1 6/15 7/1 7/15 8/1 8/15 8/31
NDb Home + R,S Hospital
+ R,G −− +R
− Hospital + R +R
Hospital −− + R,G +R
+R + R,E CDI + R,E
+R −
Hospital
ND +G
− − ND CDI −
ND +R −− −
ND ND ND
ND ND
+ R,G Hospital − ND +R
+ R,E Home Home Home Home Hospital +R
−
ND + R
ND ND
ND ND +R ND
− +R +R
NOTE. ND, not done; +, positive culture from 1 or more sites; −, negative cultures from all sites; R, perirectal; S, skin culture of chest and abdomen; G, groin; E, environment; CDI, C. difficile infection. aND: Not done indicates that the perirectal swab culture was not collected during that 2-week period despite the LTCF resident being in the facility. Cultures were collected on enrollment, every 2 weeks for the first month, and then monthly. bBold rows indicate the 4 asymptomatic carriers linked to 1 or more transmission events based on whole-genome sequencing analysis. cThe prior episode of CDI was diagnosed more than 90 days prior to enrollment.
912
Curtis J. Donskey et al
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