Table 1

Serological investigation of sheep sera for antibodies to Ehrlichia equi from different counties of Norway.

County
Number of positive flocks/total number of flocks
Number of flocks on tick pasture
Number of flocks treated against ticks
Number of flocks with a history of tick-borne fever (during the year of sampling)

Akershus #
0/4
0
0
0(0)
Aust-Agder
4/4
4
3
2(0)
Buskerud #
0/4
0
0
0(0)
Finnmark #
0/4
0
0
0(0)
Hedmark #
0/4
0
0
0(0)
Hordaland
4/4
4
3
0(0)
Møre og Romsdal
4/4
4
1
4(2)
Nordland
0/4
0
0
0(0)
Nord-Trøndelag
0/4
0
0
0(0)
Oppland #
0/4
0
0
0(0)
Rogaland
3*/4
3
2
2(1)
Sogn og Fjordane
4/4
4
2
4(1)
Sør-Trøndelag
3/8
4
2
0(0)
Telemark
4/4
4
2
0(0)
Troms #
0/4
0
0
0(0)
Vest-Agder
4/4
4
4
4(2)
Vestfold
2*/3
3
1
0(0)
Østfold
0/4
0
0
0(0)
Total
32/75
34
20
16(6)

# No known occurrence of I. ricinus

* Only one seropositive lamb in one flock

Stuen and Bergström Acta Veterinaria Scandinavica 2001 42:331   doi:10.1186/1751-0147-42-331