Still sick...

We have been battling colds in our house for the last two weeks. I don't know why but we can't seem to shake it. Just when one of us seems to get over it another one gets it and so on. This is our second bought with the same symptoms. It is really getting old. We have disinfected every surface and washed everything possible. I would almost think we were all having a collective allergic reaction to something but allergies don't typically cause a fever.