The Schmallenberg virus (SBV) infection has been identified on 92 farms, up from 83 cases, according to new figures released by DEFRA.
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The talks descended into crisis on Friday when Canada's trade minister Chrystia Freeland walked out of meetings.
Police in New York are still investigating what the substance is and whether it could be harmful.
The Sherlock actor made the comment while he received an award for his humanitarian work.