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E. phagocytophila infection in xenodiagnostic ticks that fed upon control and immunized mice 1 week after the challenge
| Mouse groupa | No. of mice with infection/ no. of mice in group | No. of ticks tested | % Infected ticks ± SE |
|---|---|---|---|
| Control | 4/4 | 120 | 82.5 ± 5.5 |
| I | 5/6 | 180 | 6.7 ± 2.1 |
| II | 7/10 | 300 | 6.0 ± 2.2 |
Mouse groups are as defined in the footnote to Table 1.
