Table 2.
Overall Incidence in the Entire Population Without Vaccination per 100 000 | Direct Effect of Vaccine | Total Number to Enroll |
---|---|---|
100 cases py | 80% | 12 475 |
85 cases py | 80% | 14 677 |
100 cases py | 75% | 14 785 |
85 cases py | 75% | 17 395 |
Abbreviation: py, person-years.