{
  "url": "https://openlegislation.uk/eu-regulation-2020-687/annex-XV/division-SURVEILLANCE/division-1",
  "json_url": "https://openlegislation.uk/eu-regulation-2020-687/annex-XV/division-SURVEILLANCE/division-1.json",
  "legislation": "eur/2020/687",
  "legislation_title": "Commission Delegated Regulation (EU) 2020/687 of 17 December 2019 supplementing Regulation (EU) 2016/429 of the European Parliament and the Council, as regards rules for the prevention and control of certain listed diseases (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2020-687",
  "path": "annex/XV/division/SURVEILLANCE/division/1",
  "kind": "division",
  "number": "1",
  "heading": "Surveillance scheme",
  "text": "The establishments and groups of aquaculture establishments keeping listed species within a surveillance zone must undergo surveillance as provided for in Article 98 to check for infection with the relevant category A disease. The surveillance must include health visits, including sampling from production units. Those visits must be carried out by the competent authority in accordance with Tables 1 and 2.\nThe criteria set out in point 1 of Annex XII, as appropriate for the species, apply to sampling.\nTable 1\nScheme for surveillance comprising health visits and samplings in establishments and groups of establishments for category A diseases in aquatic animals, except epizootic hematopoietic necrosis\nCategory A disease\nNumber of health visits per year\nNumber of laboratory examinations per year\nNumber of animals in the sample\nPeriod of the year for sampling\nResidency period of the sampled animals in the establishment\nInfection with Mikrocytos mackini\n1\n1\n150\nWhen the prevalence of infection is known to be maximal or April–May, after 3–4 months period when seawater temperatures are less than 10 °C\n4 months\nInfection with Perkinsus marinus\n1\n1\n150\nWhen the prevalence of infection is known to be maximal or in the month of September, October or November\n4 months\nInfection with Taura syndrome virus\n2\n2\n150\nIn the period of the year when water temperature is likely to reach its highest annual level\n2 months\nInfection with Yellow head syndrome virus\n2\n2\n150\nIn the period of the year when water temperature is likely to reach its highest annual level\n2 months\nTable 2\nSpecific scheme for surveillance comprising health visits and samplings in establishments for epizootic haematopoietic necrosis (EHN) in aquatic animals\nThe sampling of fish for laboratory examination must be carried out whenever the water temperature is between 11 and 20 °C. The water temperature requirement must also apply to health inspections. In establishments where the water temperature does not reach 11 °C during the year, sampling and health visits must be carried out when the water temperature is at its highest level.\nSamples from broodstock must not include gonadal fluids, milt or ova as there is no evidence of EHN causing reproductive tract infection.\nType of establishment\nNumber of health inspections per year (2 years)\nNumber of samplings per year (2 years)\nNumber of fish in the sample\nNumber of growing fish\nNumber of brood stock fish\n(a) Establishments with broodstock\n2\n2\n150 (first and second inspection)\n150 (first or second inspection)\n(b) Establishments with broodstock only\n2\n1\n0\n150 (first or second inspection)\n(c) Establishments without broodstock\n2\n2\n150 (first and second inspection)\n0\nMaximum number of fish per pool: 10",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "The sampling of fish for laboratory examination must be carried out whenever the water temperature is between 11 and 20 °C. The water temperature requirement must also apply to health inspections. In establishments where the water temperature does not reach 11 °C during the year, sampling and health visits must be carried out when the water temperature is at its highest level."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "Samples from broodstock must not include gonadal fluids, milt or ova as there is no evidence of EHN causing reproductive tract infection."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2020/687/annex/XV/division/SURVEILLANCE/division/1",
    "retrieved_at": "2026-11-01T14:42:38.590425+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}