Epidemiological relationships between 15 potential donors and recipients of mixed infection transmission.

<p>Potential donors are shown in grey, and potential recipients in black. Time on a hospital ward around the time of diagnosis is shown as a horizontal line bounded by short vertical lines. Each hospital/hospital area is given a distinct letter, each ward a number, and groups of similar wards are given the same number followed by a lower case letter. Positive samples for <i>C. difficile</i> are shown as crosses.