Here are my festive tips for avoiding colds or overcoming early signs of infection:
Wash your hands as soon as you enter the house and before doing anything else.
Don't rub your eyes or pick your nose, especially when out in public.
The moment you feel that soreness at the back of the nose, start gargling with Corsodyl, which is a miracle cure for all kinds of infections, bacterial and viral.
Take zinc tablets.
If you feel feverish get in a bath and increase the temperature slowly until you can't stand any more then sweat for twenty minutes. Or have a sauna.
Be positive; you catch around ten colds a year and only a couple develop into full-blown infections.