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Frequency of reasons for Prescreen Ineligibility (n=96).
| Criteria | Frequency (Percent) |
|---|---|
| Age (<18 Years or >40 Years) | 12 (12.5%) |
| Difficulty with Study Commitment | 15 (15.63%) |
| Health Problem or medical exclusion (e.g. HIV positive) | 11 (11.46%) |
| Lost interest | 33 (34.37%) |
| Travel to endemic area or previous vaccination | 8 (8.33%) |
| Other and unknown reasons | 14 (14.58%) |
| Multiple | 3 (3.13%) |
