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Table 4 Potential transmission events within the Acinetobacter baumannii pulsotype 27 outbreak in Birmingham, England, 2011 to 2013, reconstructed using a parsimonious analysis of ward/theatre occupancy and SNV genotype

From: Genomic epidemiology of a protracted hospital outbreak caused by multidrug-resistant Acinetobacter baumanniiin Birmingham, England

Patient no. Predicted donor(s) of infection SNVs compared to predicted donor(s) Days between donor and recipient(s)
1 Index case: a military patient repatriated from Afghanistan
2 1 0 0
4 1 3 0
6 1 1 0
7 1 1 0
8 6 0 0
9 Unknown
10 9 2 0
11 6 or 8 0,0 0
12 6 or 8 or 11 0,0,0 0
13 1 0 <14
14 6 or 8 or 11 or 12 1,1,1,1 0
15 Not included in transmission analysis: strain lost on subculture
16 13 0 0
17 11 or 12 0,0 0
18 11 or 17 1,1 0
19 18 or 11 or 17 0,1,1 0
20 11 2 <21
21 20 0 0
22 Unknown
23 11 2 <35
24 20 0 0
25 22 or 24 2,1(loss of plasmid)  
26 20 or 24 0,0 0
27 26 0 0
28 Not included in transmission analysis: mixed culture
29 20 or 24 1,1(loss of plasmid) 0
30 27 0 0
31 27 or 30 0,0 0
32 30 or 31 1,1(loss of plasmid) 0
34 31 0 <14
38 Not included in transmission analysis: not genome-sequenced
39 34 2 Theatre (same day)
40 34 1 Theatre (same day)
43 34 1 <7
44 43 0 <21
49 44 0 0
50 Unknown
51 Unknown
52 Outbreak restarts after patient 52 nursed on bed previously used by patient 50
53 Unknown
54 Unknown
55 54 0 Theatre (1 day gap)
57 50 0 <21
58 57 1 0
59 57 2 0
60 54 1 (loss of plasmid) <14
61 57 2 Theatre (4 day gap)
62 57 2 0
63 62 1 0
64 57 0 <14
65 64 0 0