Part 1 SURVEILLANCE AND CONTROL METHODS FOR VIRAL HAEMORRHAGIC SEPTICAEMIA (VHS) AND INFECTIOUS HEMATOPOIETIC NECROSIS (IHN)
United Kingdom
Table 1.A
Surveillance scheme for zones and compartments for the 2-year control period referred to in point I.2.1(a)(i) which precedes the achievement of disease-free status for VHS or IHN
The samples must be collected no sooner than 3 weeks after the transfer of the fish from fresh to saltwater. | ||||
Ovarian or seminal fluid of broodstock shall be collected at the time of maturation, in connection with stripping. | ||||
Samples must be taken from the number of fish that will ensure the detection of VHSV or IHNV with a 95 % confidence if the design prevalence is 5 %. | ||||
| Type of farm | Number of health inspections per year (2 years) | Number of samplings per year (2 years) | Number of fish in the samplef1 | |
|---|---|---|---|---|
| Number of growing fish | Number of broodstock fishf2 | |||
(a) Farms with broodstock | 2 | 2 | 50 (first inspection) 75 (second inspection) | 30 (first or second inspection) 0 (first or second inspection) |
(b) Farms with broodstock only | 2 | 1 | 0 | 75 (first or second inspection) |
(c) Farms without broodstock | 2 | 2 | 75f3 (first and second inspection) | 0 |
| Maximum number of fish per pool: 10 | ||||
Table 1.B
Surveillance scheme with a reduced sample size for the 4-year control period referred to in point I.2.1(a)(ii) which precedes the achievement of disease-free status for VHS or IHN
The samples must be collected no sooner than 3 weeks after the transfer of the fish from fresh to saltwater. | ||||
Ovarian or seminal fluid of broodstock shall be collected at the time of maturation, in connection with stripping. | ||||
Samples must be taken from the number of fish that will ensure detection of VHSV or IHNV with a 95 % confidence if the design prevalence is 10 %. | ||||
| Type of farm | Number of health inspections per year | Number of samplings per year | Number of fish in the samplef4 | |
|---|---|---|---|---|
| Number of growing fish | Number of broodstock fishf5 | |||
| First 2 years of the surveillance period | ||||
(a) Farms with broodstock | 2 | 1 | 0 (first inspection) 30 (second inspection) | 0 (first inspection) 0 (second inspection) |
(b) Farms with broodstock only | 2 | 1 | 0 | 30 (first or second inspection) |
(c) Farms without broodstock | 2 | 1 | 30f6 (first or second inspection) | 0 |
| Last 2 years of the surveillance period | ||||
(a) Farms with broodstock | 2 | 2 | 30 (first inspection) 0(second inspection) | 0 (first inspection) 30 (second inspection) |
(b) Farms with broodstock only | 2 | 2 | 30 (first and second inspection) | |
(c) Farms without broodstock | 2 | 2 | 30 (first and second inspection) | |
| Maximum number of fish per pool: 10 | ||||
Table 1.C
Surveillance schemes for zones or compartments to maintain disease-free status for VHS or IHN as referred to in point I.3
The samples must be collected no sooner than 3 weeks after the transfer of the fish from fresh to saltwater. | ||
Samples must be taken from the number of fish that will ensure the detection of VHSV or IHNV with a 95 % confidence if the design prevalence is 10 %. | ||
There shall be minimum one sample for every health inspection. | ||
| Risk level | Number of health inspections | Number of fish in the samplef7 |
|---|---|---|
| High | 2 every year | 30f8 f9 |
| Medium | 1 every year | 30 |
| Low | 1 every 2 years | 30 |
| Maximum number of fish per pool: 10 | ||
- IRequirements for surveillance and eradication programmes to obtain and maintain disease free-health statuses with regard to VHS and IHN and containment measures for those listed diseases
- IIDiagnostic and sampling methods
Annotations
Footnotes
- f1
The samples must be collected no sooner than 3 weeks after the transfer of the fish from fresh to saltwater.
- f2
Ovarian or seminal fluid of broodstock shall be collected at the time of maturation, in connection with stripping.
- f3
Samples must be taken from the number of fish that will ensure the detection of VHSV or IHNV with a 95 % confidence if the design prevalence is 5 %.
- f4
The samples must be collected no sooner than 3 weeks after the transfer of the fish from fresh to saltwater.
- f5
Ovarian or seminal fluid of broodstock shall be collected at the time of maturation, in connection with stripping.
- f6
Samples must be taken from the number of fish that will ensure detection of VHSV or IHNV with a 95 % confidence if the design prevalence is 10 %.
- f7
There shall be minimum one sample for every health inspection.
- f8
The samples must be collected no sooner than 3 weeks after the transfer of the fish from fresh to saltwater.
- f9
Samples must be taken from the number of fish that will ensure the detection of VHSV or IHNV with a 95 % confidence if the design prevalence is 10 %.