Commission Delegated Regulation (EU) 2020/687Show full title

ANNEX XV U.K.

SURVEILLANCE SCHEME AND DURATION OF CONTROL MEASURES IN THE SURVEILLANCE ZONE FOR CATEGORY ADISEASES IN AQUACULTURE ANIMALS (as referred to in Articles 98 and 101 of this Regulation) U.K.

1. Surveillance scheme U.K.

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.

The criteria set out in point 1 of Annex XII, as appropriate for the species, apply to sampling.

Table 1

Scheme for surveillance comprising health visits and samplings in establishments and groups of establishments for category A diseases in aquatic animals, except epizootic hematopoietic necrosis

Category A disease	Number of health visits per year	Number of laboratory examinations per year	Number of animals in the sample	Period of the year for sampling	Residency period of the sampled animals in the establishment
Infection with Mikrocytos mackini	1	1	150	When 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	4 months
Infection with Perkinsus marinus	1	1	150	When the prevalence of infection is known to be maximal or in the month of September, October or November	4 months
Infection with Taura syndrome virus	2	2	150	In the period of the year when water temperature is likely to reach its highest annual level	2 months
Infection with Yellow head syndrome virus	2	2	150	In the period of the year when water temperature is likely to reach its highest annual level	2 months

Table 2

Specific scheme for surveillance comprising health visits and samplings in establishments for epizootic haematopoietic necrosis (EHN) in aquatic animals ^a

a 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.
b Samples from broodstock must not include gonadal fluids, milt or ova as there is no evidence of EHN causing reproductive tract infection.
Type of establishment	Number of health inspections per year (2 years)	Number of samplings per year (2 years)	Number of fish in the sample
			Number of growing fish	Number of brood stock fishb
(a) Establishments with broodstock	2	2	150 (first and second inspection)	150 (first or second inspection)
(b) Establishments with broodstock only	2	1	0	150b (first or second inspection)
(c) Establishments without broodstock	2	2	150 (first and second inspection)	0
Maximum number of fish per pool: 10

2. Duration of the control measures in the surveillance zone U.K.

Category A disease	Minimum periods of surveillance
Infection with Mikrocytos mackini	3 years
Infection with Perkinsus marinus	3 years
Infection with Taura syndrome virus	2 years
Infection with Yellow head syndrome virus	2 years
Epizootic haematopoietic necrosis	2 years

When the period of surveillance has elapsed and there has been no new detection of infection with the relevant category A disease, the measures in the surveillance zone must be lifted as provided for in Article 101 of this Regulation.