Four children, two with measles, in the same bed: their mother tells the district nurse that there is no risk of infection. Wood engraving by S. Wood, 1915.

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Credit: Four children, two with measles, in the same bed: their mother tells the district nurse that there is no risk of infection. Wood engraving by S. Wood, 1915. Credit: Wellcome Collection. Attribution 4.0 International (CC BY 4.0)