| |
1995
|
1996
|
1997
|
1998
|
|---|
| |
Sweden
|
Finland
|
Norway
|
Sweden
|
Finland
|
Norway
|
Sweden
|
Finland
|
Norway
|
Sweden
|
Finland
|
Norway
|
|---|
|
Lymph node samples from
| | | | | | | | | | | | |
|
sows and boars
|
2/1361a
|
9/2725
|
-
|
3e/2009
|
8/2627
|
-
|
2/2614
|
4/3165
|
-
|
7/3074
|
3/3070
|
-
|
|
fattening pigs
|
1/1721a
|
10/2792
|
4/3207d
|
1/2699
|
5/2683
|
0/2818d
|
6e/3382
|
6/3209
|
0/2905d
|
3/3914
|
5/3247
|
0/3104d
|
|
Faecal herd samplesb from
| | | | | | | | | | | | |
|
nucleus and multiplyingc herds
|
n.a.
|
n.a.
|
1/175
|
0/191
|
0/197
|
0/185
|
1/137
|
2/139
|
0/147
|
0/167
|
0/114
|
0/178
|
|
sow pool herds
|
n.a.
|
-
|
-
|
0/23
|
-
|
-
|
0/30
|
-
|
-
|
0/35
|
-
|
-
|
-
a Samples collected during weeks 19–52.
-
b Sweden: 10 pooled samples per herd. Each cultivation represents 5 sows and is pooled at the laboratory; Finland: 2 pooled samples per herd. Each Cultivation represents a pooled sample from 5 pens with growing/finishing pigs; Norway: 3–20 samples per herd. Each cultivation represents 5 Growing/finishing pigs in a pen.
-
c In Finland only nucleus herds included.
-
d Samples from sows included.
-
e Two positive samples from a same herd. n.a. Information not available.
