Table 2

 Inoculum, duration of infection, and follow up for all patients given a challenge dose of Helicobacter pylori

Age/sexSubject NoInoculumCure of infection (weeks)Follow up*
*Last histological assessment (months post eradication therapy).
†Inoculum measured by back titration from actual inoculum.
Study A: endoscopy at 14 days.
29 M1011.7×1010124.5*
25 F1031.7×10101212 (UBT)
25 M1043.6×1071213
29 M1053.6×107124
24 F1074.0×107211
23 F1082.5×10729.5
34 M1091.1×106210
24 M1101.1×106211
33 F1111.5×105211
24 M1061.1×105Uninfected4
23 F1021.1×105Uninfected4
Study B: endoscopy at 30 days.
29 M2051.0×104/5.0×10443.5
26 F2061.0×104/1.4×10544
21 F2071.0×104/1.2×10544
28 M2012.3×105/2.3×10543
37 F2032.3×105/2.3×10543
33 F2022.3×105/2.3×10543.5
23 M2101.1×106/1.0×10643.5
26 M2121.1×106/6.2×10643.5
22 F2131.1×106/1.0×10643.5