Martha Henson, Multimedia Editor at Wellcome Trust, reports on a recent public event at Wellcome Collection run by UCL researchers.

We’ve been thinking a lot about Dirt recently at Wellcome Collection, so it seemed reasonable to pose the question: “Just how dirty is Wellcome Collection?” To find out, Professor Mike Wilson and Dr Derren Ready of UCL sent teams of children and their families out to swab door handles around the building, and I filmed them in action.

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