Table 2: Summary of the effect on seroreactivity of one and two doses of vaccination (A) Table showing distribution of individuals with one dose of vaccination; (B) Table showing distribution of individuals with two doses of vaccination.
| A | |||
| 
 | Number of Subjects | Seropositive | Seronegative | 
| Vaccine Dose I, of which | 71 | 42 (59%) | 29 (41%) | 
| Infection detected prior to vaccination | 15 | 15 (100%) | 0 (0%) | 
| infection not detected prior to vaccination | 18 | 2 (11%) | 16 (89%) | 
| Not tested before vaccination | 38 | 25 (66%) | 13 (34%) | 
| B | |||
| 
 | Number of Subjects | Seropositive | Seronegative | 
| Vaccine Dose II | 83 | 75 (90%) | 8 (10%) |