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The pdf file COMMISSION REGULATION (EC) No 1266/2007 of 26 October 2007 Annex V
Criteria for the definition of the seasonally vector-free period (referred to in Article 9(3))
For the purpose of determining a bluetongue seasonally-free zone, the seasonally vector-free period for a determinate epidemiologically relevant geographical area of a Member State (epidemiologically relevant geographical area) shall be defined by the competent authority using at least the following criteria:
(a) A bluetongue monitoring and/or surveillance programme must be in place.
(b) The specific criteria and thresholds used for the determination of the seasonally vector-free period shall be defined considering theCulicoides species proven or suspected to be the main vectors in the epidemiologically relevant geographical area.
(c) The criteria used for the determination of the seasonal vector-free period shall be applied considering data from current and previous years (historical data). In addition, the aspects linked to surveillance data standardization shall be taken into consideration.
(a) No bluetongue virus circulation within the epidemiologically relevant geographical area, as demonstrated by bluetongue surveillance programmes or other evidence suggesting a halt in bluetongue virus.
(b) Cessation of vector and likely vector activity, as demonstrated through entomological surveillance as part of the bluetongue monitoring and/or surveillance programmes.
(c) Captures ofCulicoides species proven or suspected to be the vectors of the serotype present in the epidemiologically relevant geographical area below a maximum threshold of vectors collected that shall be defined for the epidemiologically relevant geographical area. In the absence of sound evidence supporting the determination of the maximum threshold, total absence of Culicoides imicola specimens and less than five parous Culicoides per trap must be used.
(a) Temperature conditions that impact on the behaviour of the vectors activity for the epidemiologically relevant geographical area. The temperature thresholds shall be defined in consideration of the ecological behaviour ofCulicoides species proven or suspected to be the vectors of the serotype present in the epidemiologically relevant geographical area.
Farmers Weekly interprets this as follows:
The regulation calls on member states to establish "seasonally vector-free periods", during which time inter-zonal movements may be permitted. This should be granted if:
* There is no virus actively in circulation.
* Vector activity has ceased.
* The midge population has dropped significantly.
* Air temperatures have dropped below a certain threshold.DEFRA is understood to be consulting with stakeholders on the scope to introduce such a "seasonally vector-free period" in the UK.
The new regulation also specifies a number of conditions for live animals to move out of a restricted zone. These include:
* The animal has been in a "seasonally vector-free period" for at least 60 days, or
* The animal has been protected from vector attack for at least 60 days prior to dispatch, or
* The animal has been protected from vector attack for at least 28 days and subject to a serological test, or
* The animal has been vaccinated at least 60 days before movement, or
* The animal has been shown to have antibodies against bluetongue (suggesting it has acquired immunity).