1.The competent authority may grant derogations from the measures provided for in Article 78(1)(a) and (c) in the event of an official confirmation of a category A disease in establishments where listed species are kept for scientific purposes or purposes related to conservation of endangered species, provided that:
(a)the animal health status of the concerned Member State, or of other Member States, is not jeopardised; and
(b)all appropriate biosecurity measures as listed in Article 78 are taken to prevent any risk of spreading of the category A disease agent.
2.Where a derogation is granted pursuant to paragraph 1, the competent authority shall ensure that aquaculture animals of listed species covered by the derogation are:
(a)kept in premises where appropriate biosecurity measures to avoid spread of the relevant category A disease are implemented; and
(b)subjected to further surveillance and laboratory examination and are not moved from the establishment until the laboratory tests have indicated that they do not pose a risk of further spread of the relevant category A disease.