# Commission Delegated Regulation (EU) 2020/689 of 17 December 2019 supplementing Regulation (EU) 2016/429 of the European Parliament and of the Council as regards rules for surveillance, eradication programmes, and disease-free status for certain listed and emerging diseases (Text with EEA relevance), Division 2: Frequency and period for testing:

Extent: E+W+S+N.I.

(a) the frequency for sampling and testing of poultry establishments must be determined based on the outcome of a risk assessment by the competent authority;
(b) the time period for sampling must coincide with seasonal production for each production category, but must not compromise the risk-based surveillance approach;
(c) when relevant, the time period for sampling must take into account the period of heightened risk as referred to in point 3 of Section 3. Samples must be subjected to laboratory testing by virological methods, when taken for:
(i) early detection of HPAI in poultry referred to in Section 3;
(ii) early detection of HPAI in wild birds referred to in Section 4;
(iii) complementary surveillance for HPAI in poultry species which generally do not show significant clinical signs of HPAI referred to in Section 5;
(iv) follow-up of sero-positive findings referred to in point 4(b).
For virological testing the prevalence and time window for detection of active infection must be taken into account.

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Source: https://www.legislation.gov.uk/eur/2020/689/annex/II/section/9/division/2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2020-689/annex-II/section-9/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.