Cold and Flu Season?

On the calendar they, call it the Autumnal Equinox or the First Day of Autumn. As a mom, I am now thinking they should rename it as the First Day of Cold/Flu Season. Grace has a runny nose and a cough. I am trying to disinfect everything she touches before Lydia does. We have been fortunate that no one in the house has been sick since Lydia was born.