Division 2

Sampling must primarily concern:

• pigs showing signs or post-mortem lesions suggesting classical swine fever and their in-contact pigs;

• other pigs which might have had risky contacts with infected or suspected pigs or which are suspected to have been contaminated with classical swine fever virus.

These pigs must be sampled in accordance with the instructions of the competent authority, which will take into account the epidemiological situation. In this case, the sampling procedures laid down in the second, third and fourth subparagraphs below shall be used for guidance purposes.

Furthermore, pigs proceeding from each of the sub-units of the holding must be sampled at random^f1. In this case, the minimum number of samples to be taken for serological tests must allow for the detection of 10 % seroprevalence with 95 % confidence in the sub-unit in question.

However, in the case of:

• breeding sows, the minimum number of sows to be sampled must allow for the detection of 5 % seroprevalence with 95 % confidence^f2;

• a semen collection centre, blood samples must be taken from all boars.

The type of samples to be taken for virological tests and the test to be used will be in accordance with the instructions of the competent authority, which will take into account the range of tests that can be performed, the sensitivity of these tests and the epidemiological situation.