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Participants of Heterologous Challenge and Traditional Challenge Cohorts
| Study | Number of Volunteers | Age (yr) | Sex (M:F) | Study Period | Dose (cfu/Naris) | Experimental Carriage Rate |
|---|---|---|---|---|---|---|
| Cohort A (heterologous challenge) | 8 | 28 ± 14 | 4:4 | February 2013–March 2013 | 35,375 ± 2,651 | 50% (4/8) |
| Cohort B (challenge) | 24 | 23 ± 3 | 9:15 | September 2012–November 2012 | 61,944 ± 4,603 | 42% (10/24) |
