Unusual moisture found on surgical tools at Borders General Hospital has prompted an investigation into cleaning procedures.

BBC: Medical tools

"We can't say for sure how much of that benefit is down to the yoghurt and how much they are down to a whole range of infection control procedures that the hospital has in place such as the deep cleaning programme, the bare-below-the-elbow programme, and the increased isolation procedures, " Ms Heyes said.

BBC: RELATED BBC SITES

If those procedures are followed for the duration of the cleaning, said Carson, the potential threat should be low.

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