Since death rates from the COVID-19 are highest among the oldest, the impact of the current pandemic in a given society depends to a large extent on the share of elderly persons and their living arrangements. Whereas the former is well known, the latter is not. Arguably, contagion itself and the severity of its symptoms are likely to vary among elderly persons living alone, co-residing with family members or dwelling in institutions. Arguments in favour and against the premise that single-living elderly are better able to self-isolate can be made. Long-term care facilities have worsened the effects of the epidemic because they have often become death traps in some but not all countries. Once contagion takes place, living arrangements can make a huge difference in the way the disease can be managed by the individual, his family and society. Properly understanding the dynamics of contagion and the handling of the disease in terms of living arrangements of elderly people is essential for effectively tackling future outbreaks of similar epidemics.