Table 3 Mean percentage of infected neutrophils observed in groups of five lambs inoculated with one variant of A. phagocytophilu m nine weeks (NW/ON-2008) and twelve weeks (NW/ON-2009) after the first inoculation, respectively

3

4

5

6

7

8

10

11

NW - 2008

-

<1

-

-

-

-

-

-

NW - 2009

-

-

-

-

-

-

-

-

ON - 2008

-

-

10^a

24 ^a

16 ^a

1 ^a

-

-

ON - 2009

13.5^b

30.6

25.4

20.8

11.5^c

5.5 ^b

<1 ^a

-