We consider the problem of trace contamination being introduced accidentally during the production of ruminants feedstuffs containing constituents of animal origin.

我们认为，问题的痕量污染正在推行生产过程中不小心的反刍动物饲料含有动物成分的原产地。

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"In addition to the cases of gross contamination there have been cases of trace contamination, " Ms Brown added.

BBC: Horsemeat scandal: Public quizzed on contamination

Muslim News editor Ahmed Versi said any incidents of trace contamination were, nevertheless, "a real concern" for the Muslim community.

BBC: Horsemeat scandal: Public quizzed on contamination

The agency says figures are not currently available for cases of trace contamination of other species found in beef products.

BBC: Horsemeat scandal: Public quizzed on contamination