From: Effectiveness of DNA-recombinant anti-hepatitis B vaccines in blood donors: a cohort study
Cohort | HBV cases | Total follow-up (person-years) | Person-years at risk* | Incidence per thousand person-years | IR (95% CI) |
---|---|---|---|---|---|
Vaccinated | 0 | 2747 | 2715 | 0.00 | 0 (0.000, 0.696) |
Non-vaccinated | 4 | 1725 | 1717 | 2.33 | 1.000 ** |