The strain of Foot and Mouth disease found on a farm in England has been identified.
Scientists say it is identical to the one being used in vaccines at a nearby Government funded animal research centre.
An urgent review is under way into bio security at the Pirbright laboratory in Surrey, as experts investigate if it is the source of the outbreak.
British Prime Minister Gordon Brown has said the lab is under close scrutiny.
COMMENT RULES: Comments that are judged to be defamatory, abusive or in bad taste are not acceptable and contributors who consistently fall below certain criteria will be permanently blacklisted. The moderator will not enter into debate with individual contributors and the moderator’s decision is final. It is Belfast Telegraph policy to close comments on court cases, tribunals and active legal investigations. We may also close comments on articles which are being targeted for abuse. Problems with commenting? email@example.com