As she cleaned the hospital in April, Karen was scared not for herself, but for her family. She and her husband, Mal, had moved into a caravan in Mal’s parents’ garden, while his mother was ill with cancer – and they stayed on after she died, to support Mal’s 80-year-old father, Malcolm. Mal, a hospital porter, was shielding because he has chronic obstructive pulmonary disease, and Malcolm senior was clearly vulnerable because of his age.