How do you protect an elderly parent during a viral season without isolating them completely?

The aim is reducing risk without producing loneliness, which carries its own health cost. The highest-yield measures are vaccination for them and for everyone in the household, since most infections arrive from family rather than strangers. Beyond that: anyone with symptoms keeps distance and masks indoors, ventilation matters more than surface cleaning, and crowded indoor gatherings during a local surge are the thing worth skipping. Outdoor visits, walks and open windows carry far lower risk than staying shut inside with an infectious relative.