Table 3 Serological follow-up results post-vaccination for 33 heifers vaccinated with a standard dose of A19
Time | No. positive | Seroprevalence (95% CI), % |
|---|---|---|
1Â week pre-vaccination | 2 | 6.1 (0.7, 20.2) |
8Â months post-vaccination | 14 | 42.4 (25.5, 60.8) |
12Â months post-vaccination | 1 | 3.0 (0.1, 15.8) |
20Â months post-vaccination | 8 | 24.2 (11.1, 42.3) |
24Â months post-vaccination | 5 | 15.2 (5.1, 31.9) |