Infectious Pancreatic Necrosis Virus (IPNV) - Fróðskaparsetur Føroya

4 Results
There were taken 24 seawater samples over at period of 6 months, of which 16 were Listeria
monocytogenes positive. Two samples of cooled water from the road tanker were also taken.
None of them were positive (see Table 6).
Table 6: Seawater samples
Sample site
(fjord)
Harvesting
site A
Harvesting
site B
Harvesting
site C
Ref. by
marine
aquacultures
A, B and C
Number of
samples
taken
9
Number of L.
monocytogen
es positive
samples
6
% L.
monocytoge
nes positive
samples
66.7
Sample number
(Resembling
serotype)
4A (1/2a), 5A (4b), 7A
(?), 8A (1/2a), 9A
(1/2a), and the
December sample
4 2 50 2B (4b) and the
6
3 (5 * )
4
3 (3 * )
66.7
100 (60)
December sample
1C (1/2a), 3C (1/2a),
6C (4b), and the
December sample
Ref. A,
Ref. B, and
Ref. C
Total 24 15 62.5 -
* Two more reference samples were taken when visiting harvesting site A. None of them were L. monocytogenes
positive.
1. See Appendix 1
2. The December sample tested positive, bur was not further investigated (see text).
Table 6 includes three seawater samples taken in December (one positive from each fjord).
Even though the samples tested positive for L. monocytogenes, they were not saved and
processed further, due to a misunderstanding. The samples are therefore not included in
further results i.e. Figure 4 and Figure 5.
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