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. 2012 Jun 25;9:54. doi: 10.1186/1742-4690-9-54

Table 4.

Baseline characteristics of cases (transmission strains) and controls (chronic strains)

Characteristics
Transmission Strains
Chronic Controls
  (n = 133) (n = 133)
Subtype,n(%)
 
 
B
78 (58.7)
78 (58.7)
C
55 (41.4)
55 (41.4)
α4β7 Binding Site,n(%)
 
 
LDV
44 (33.1)
56 (42.1)
LDI
48 (36.1)
36 (27.1)
Both
92 (69.2)
94 (70.1)
Contains the ‘D’
133 (100)
131 (98.5)
Histidine at position 12,n(%)
 
 
 
61 (45.9)
59 (44.4)
Histidine or Arginine at position 12,n(%)
 
71 (53.4)
69 (51.9)
Amino Acid Length, V1 loop
 
 
Range
9 to 48
15 to 45
Mean (standard deviation)
25.5 (6.12)
26.8 (6.40)
Amino Acid Length, V2 loop
 
 
Range
33 to 52
33 to 59
Mean (standard deviation)
37.9 (3.37)
38.0 (3.69)
Amino Acid Length, V3 loop
 
 
Range
27 to 28
26 to 31
Mean (standard deviation)
27.8 (0.41)
27.9 (0.50)
Amino Acid Length, V4 loop
 
 
Range
6 to 30
2 to 27
Mean (standard deviation) 18.2 (4.40) 18.0 (4.13)