Table 1: Surveillance programme for SI in Norwegian pigs in 2009 and 2010. Detection of pandemic (H1N1) 2009 specific antibodies by ELISA in different counties in Norway.

County20092010
Number of
herds tested
Number of
seropositive herds (%)
Number of
herds tested
Number of
seropositive herds (%)

Troms and Finnmark50 (0%)52 (40%)
Nordland200 (0%)204 (20%)
Trøndelag and Møre883 (3%)8848 (55%)
Vestlandet110 (0%)245 (21%)
Rogaland and Agder11711 (9%)12973 (57%)
Vestfold, Buskerud, Telemark621 (2%)5920 (34%)
Østfold and Akershus770 (0%)6920 (29%)
Hedmark and Oppland721 (1%)6518 (28%)
Total Norway45216 (3.5%)
(95% CI 2.2–5.7%)
459190 (41%)
(95% CI 37–46%)