I actually have auto immune problems. Yes, when your system is on overload trying to heal, you are more suceptable to get colds etc. It seems you have to be even more careful about germs. I am not exactly a germafobic, but i do use wipes in the grocery store, and go down a different isle if someone is sneezing. Those bugger colds can live on surfaces for a long time. I live in a high tourist area, and all the northern folks come down here for the sunshine, and of course want to be outside with their lousy colds, so I am careful. Try to use those antibactial wipes on your car door, steering wheel, door knobs at home, your hands after you go someplace. Your cell phone and key pads are good wipe down too. I hope you don't get any more colds. Just be a little more careful and you won't. I did not get one this year, and there were thousands down here visiting....good luck to you. ginnie