Paragraph 5
The Chief Veterinary Officer is satisfied that an epidemiological link has been established between a place in the United Kingdom where animals susceptible to FMD may be held or found and an outbreak of FMD outside of the United Kingdom which has been confirmed by the competent authority in the country concerned, and that any of the following sub-paragraphs applies in respect of any place where that outbreak is identified outside of the United Kingdom:
any animal is positive for antibody to FMD virus structural or non-structural proteins, in circumstances where previous vaccination, residual maternal antibodies or non-specific reactions can be excluded as possible causes of seropositivity;
viral antigen or viral RNA specific to any serotype of FMD virus has been detected and identified in samples collected from any animal of a susceptible species;
serological evidence of active infection with FMD by detection of seroconversion from negative to positive for antibody to FMD virus structural or non-structural proteins has—
except where paragraph (ii) applies, been established in any animal of a susceptible species; or
where a previously seronegative status cannot be reasonably be expected, been established in any animal of a susceptible species following detection of seroconversion carried out in paired samples collected from the same animals on two or more occasions at least 5 days apart, in the case of structural proteins, and at least 21 days apart, in the case of non-structural proteins,
and previous vaccination, residual maternal antibodies or non-specific reactions can be excluded as possible causes of seropositivity; or
clinical signs consistent with FMD are observed in any animal of a susceptible species.