Sorry to hear that. Louise and I didn't have a normal Christmas either, for similar reasons: we're well, but her family who were meant to be visiting have been incapacitated by flu in a similar way. Instead we had a nice quiet day in front of the fire, with a brief gap for a walk, and a normal dinner. We've postponed Christmas proper until Sunday, and are now putting up more decorations, and pretending it's Christmas Eve tomorrow.