I have a love/hate relationship with winter. I enjoy the cooler, crisper air and the prospects of ski season. My husband loves it because it means football season. But... for years I get sick at the first onset of a significant weather change. The first cold week or a few days of the fall etc, like clock-work my throat gets a tingle and I am usually down for the count for a few days. Getting an early winter cold is about as natural as the seasons changing for me at this point. With a big family I don't envy your immune system. Sounds like you are always in a constant fight battling cold and flu season.